3 month old baby sleep schedule: Naps, wake windows and sleep tips

The first few months with your baby can feel like a blur of feedings, diaper changes, and short stretches of sleep. Newborn babies typically sleep 14 to 17 hours in each 24-hour day, but the sleep is accumulated in small chunks.

By the time your baby reaches the 3-month mark, things may start to feel a little more predictable. While every baby is different, many parents start noticing a gentle rhythm forming. Daytime naps become slightly more structured, bedtime may get easier, and your baby may begin developing the early foundations of a sleep routine.

If you are wondering what a 3 month old baby sleep schedule looks like and how to support your baby’s rest, you are in the right place.

The importance of naps for babies

Although nighttime sleep receives a lot of attention, daytime sleep is equally important during the early months, especially since newborns consider little difference between day and nighttime sleep. Naps play a huge role in your baby’s learning, physical rest, and better moods. 

Here is why naps matter:

1. Behavior: Well-rested babies are generally calmer and less fussy. Regular naps can help prevent overtiredness, which often leads to crankiness and difficulty settling.
2. Learning: Babies absorb a lot of information every day. Sleep gives their brains time to process new experiences and build early learning skills.
3. Memory: During sleep, your baby’s brain organizes and stores what they have seen, heard, and practiced while awake.
4. Emotional regulation: Rest helps babies manage their feelings more easily. A baby who gets enough sleep is often better able to cope with stimulation and changes in their environment.
5. Physical growth: Important growth processes happen during sleep, including the release of growth hormones that support healthy development.
6. Nighttime sleep: It may sound surprising, but good daytime naps often lead to better nighttime sleep. When babies nap well during the day, they are less likely to become overtired by bedtime.
   

At 3 months old, naps may still be a little unpredictable, and that is completely normal. Over time, they will gradually become more consistent.

3 month old baby developmental milestones

Around three months, most, if not all of your baby’s infant reflexes have probably disappeared. Instead, you’ll see more purposeful movements, such as opening and closing hands and kicking legs. 

You may start noticing several developmental changes:

• Less colic and easier soothing: By month three, about 85 percent of babies who previously had colic begin to outgrow it, which often makes evenings a little calmer and soothing easier for parents.
  
• Longer stretches of sleep at night: Some babies may begin sleeping longer stretches, sometimes upto 6 hours at night, although many still wake for one or two feeds, especially if they are breastfed.
  
• Stronger neck and upper body muscles: Tummy time starts paying off around this age. Many babies can lift their head and chest briefly when lying on their tummy as their neck and shoulder muscles strengthen.
  
• Early rolling attempts: By the end of the third month, a few babies may roll from tummy to back, though most will reach this milestone closer to four months.
  
• Improving hand-eye coordination: Around this age, babies start discovering their hands and start opening and closing them. You may see your baby bring their hands to their mouth, swiping at toys, and trying to grasp objects and briefly hold them, although they may still drop them frequently.
  
• More social smiles: Your baby may smile in response to your voice, face, or playful interactions, showing they are becoming more socially engaged.
  
• Babbling and making new sounds: Around this age, babies often start babbling, cooing, and experimenting with different sounds, which is an early step toward communication.
  
• Early self-soothing behaviors: Sucking on hands or fingers becomes more common and can help babies start learning early self-soothing skills.
  
• Circadian rhythm starts forming: Around 10 to 12 weeks, the first signs of a natural circadian (sleep-wake) rhythm begin to appear. This biological shift often helps babies settle into longer nighttime sleep periods.
  
• Sharper vision and growing curiosity: By three months, babies can see objects from several feet away and often become fascinated by faces, high-contrast shapes, and circular images such as bulls-eye and spirals. 

Remember that every baby develops at their own pace. Some babies will show these changes earlier, while others may take a little longer.

What’s going on in your baby’s brain?

For the 3-month mark, you’ll want to let your doctor know if your child still isn’t doing things like grasping toys, tracking moving objects and imitating sounds and facial expressions.

Your baby’s vision is continuing to sharpen. By 3 months, they’ll be able to see things from several feet away, and they will also start to become obsessed with circular images such as individual faces, as well as bull’s-eyes and spirals.

Note: The American Academy of Pediatrics (AAP) has published a developmental health watch, which includes developmental milestones for your 3 month old baby. You might want to take a look and discuss with your pediatrician during your next well-child care visit.

How much should a 12 week old baby sleep? 

At 3 months old, most babies need about 14 to 17 hours of sleep within a 24 hour period.

This usually includes:

• Nighttime sleep: 10 to 12 hours total, with one or two feedings.
• Daytime sleep: About 3 to 5 hours spread across several shorter naps or just 2 naps (one in the morning and one in the afternoon).

Some babies may start sleeping longer stretches overnight, while others still wake every few hours to feed. Both patterns can be completely normal at this age. Instead of focusing on exact numbers, it often helps to watch your baby’s cues and support sleep when they seem tired.

What are 3 month old wake windows?

Wake windows are the amount of time your baby can comfortably stay awake between sleep periods. 

For a 3 month old baby, wake windows are usually around: 60 to 90 minutes

Some babies may stretch closer to two hours, especially later in the day, but many still need sleep sooner. It’s prudent to keep it under two hours. If your baby stays awake too long, they may become overtired, which can make it harder for them to fall asleep and stay asleep.

Cradlewise tip: You should continue to soothe your child before they show signs of becoming overtired, and put them down in their Cradlewise when they’re drowsy but awake, so they can practice their own self-soothing skills.

Activities for a 3 month old baby

At 3 months, playtime is about fun and also about how your baby learns about the world. Setting aside a little time each day for simple activities can help support their development while strengthening your bond.

• Explore a mirror: Let your baby look at a baby-safe mirror during playtime. Babies love looking at faces, even their own.
• Talk, sing, and read together: Chatting, singing, and reading encourages your baby to coo and respond, building early communication skills.
  Offer simple toys: Place a soft, lightweight, and colorful toy within reach so your baby can look at it, touch it, and try to grasp it.
• Play under a baby gym: A play gym encourages babies to kick, stretch, and bat at hanging toys while they explore movement.
• Practice tummy time: Daily tummy time helps strengthen your baby’s neck, shoulder, and arm muscles for future milestones.

Nap schedule for a 3 months old

Most 3 month old babies take 3 to 5 naps per day, depending on how long each nap lasts. Because sleep cycles are still developing, naps can vary quite a bit in length.

You might see:

• Short naps lasting 30 to 45 minutes
• Longer naps lasting 1 to 2 hours
• A mix of both throughout the day
  

At this stage, naps may not follow an exact schedule yet. Instead, many parents find it helpful to follow wake windows and their baby’s tired cues.

Sample 12-week-old baby sleep schedule

Keep in mind that this is just an example. Your baby may be taking fewer naps that are longer in duration. But ideally, they won’t be awake for longer than two hours at any given point during the day.

Signs your 3 month old is tired

Recognizing sleepy cues can make a big difference in helping your baby fall asleep more easily. If your baby becomes very fussy or difficult to settle, they may already be overtired.

Common signs include:

• Rubbing eyes
• Looking away or losing interest in toys
• Slower movements
• Fussiness
• Yawning
• Staring into space

Common sleep challenges at 3 months

Even as sleep improves, parents may still run into a few common challenges owing to developmental changes your little 3 month old is experiencing. 

• Short naps: Many babies still take short naps because their sleep cycles are still maturing.
• Inconsistent schedules: It is normal for naps and bedtimes to shift from day to day.
• Growth spurts: Around three months, babies may temporarily wake more often to feed.
• Sleep regression signs: Some babies begin showing signs of 3 month sleep regression, such as lighter sleep and waking more frequently overnight.
• Teething: Most babies begin teething between 6 to 10 months, though early teething can occasionally start around 3 months. Mild gum discomfort may make it harder for some babies to fall asleep or stay asleep. However, most sleep disruptions at this age tend to be temporary.

These phases are temporary and usually resolve as your baby’s sleep continues to mature.

Feeding routine for a 3 month old baby

Feeding patterns often start to feel a little more predictable by the third month. Most babies continue gaining about 1.5 to 2 pounds and around 1 to 1.5 inches per month during early infancy. Your pediatrician will track your baby’s growth along their percentile curve to make sure everything is progressing well.

How often a 3 month old eats

Most babies feed every 3 to 4 hours, whether they are breastfed or formula-fed. Many babies take about 4 to 5 ounces per feeding, though appetite can vary from baby to baby. Breastfed babies might need more frequent feedings.

Continue breastmilk or formula only

At 3 months, your baby should still be getting only breastmilk or formula. The American Academy of Pediatrics recommends waiting until around 6 months before introducing solid foods, unless advised otherwise by your pediatrician.

Watch for growth spurts

Around the end of the third month, some babies go through a growth spurt. During this time, your baby may seem hungrier, fussier, or may wake more often at night to feed. This phase usually lasts just a few days before things settle again.

Wet diapers are a good sign

A well-fed baby typically has at least six wet diapers in 24 hours, and the urine should be pale and mild-smelling. If you notice fewer wet diapers or darker urine, it is a good idea to check with your pediatrician.

Burping may get easier

Some parents still burp their baby after every few ounces or when switching breasts. As babies grow and gain better head and trunk control, they may burp more easily on their own, though you can still help if they seem uncomfortable.

The biggest takeaway: follow your baby’s hunger cues. Some babies eat a little more, some a little less, and both are completely normal.

How to help support your baby’s sleep during the third month

During the third month, you should continue to follow your baby’s cues and not stress out too much about getting them on a specific schedule. But you will start to notice some predictable patterns, which can be comforting, especially for first-time parents.

Conclusion

At three months old, your baby is still learning how sleep works. While the newborn sleep routine may have felt unpredictable, many families start seeing the early signs of a routine around this time.

Your baby’s sleep schedule, nap patterns, and wake windows will continue to evolve over the next few months. The most important thing is to stay flexible and follow your baby’s cues as they grow.

More posts you might like:

• 4-month-old baby sleep guide
• 5-month-old baby sleep guide
• 6-month-old baby sleep guide
• 7-month-old baby sleep guide
• 8-month-old baby sleep guide
• 9-month-old baby sleep guide
• 10-month-old baby sleep guide
• 11-month-old baby sleep guide
• 12-month-old baby sleep guide

Sources:

1. Importance of naps. Sleep Foundation. 2025. How Much Sleep Do Babies and Kids Need?
2. Circadian rhythms in 10- to 12-week olds. Nature of Science and Sleep. 2017. Infant sleep and its relation with cognition and growth: a narrative review
3. Sleep. CDC. 2004 About Sleep. 
4. 3-month-olds cry for about an hour each day. Zero to Three. 2016. Birth to three months: Your baby’s development
5. Four types of developmental milestones. HealthyChildren.org. 2009. Developmental milestones: 3 months.
6. Babies don’t have regular sleep cycles. HealthyChildren.org. 2018. Getting your baby to sleep.
7. Baby sleep needs by age. Stanford Children’s Health. Infant sleep.
8. Number of hours of naps per day. Pediatric Sleep Council. Month 3.
9. Baby feeding frequency. HealthyChildren.org. 2022. How often and how much should your baby eat? 
10. Teething and 3-month-olds. HealthyChildren.org. 2018. Baby teething pain. 
11. When to stop swaddling. HealthyChildren.org. 2020. Swaddling: Is it safe?
12. Early bedtimes and bedtime routine ideas and duration. Pediatric Sleep Council. Month 3.
13. Strengthen the bedtime routine. NHS. 2025. Helping your baby to sleep.