3 Month Old Baby: Milestones, Sleep & Feeding Guide

Your 3 month old is becoming a little chatterbox — cooing, giggling, and discovering their own hands like they’re the most interesting toy in the house. This is often the month sleep starts to organize itself, feeds get a bit more efficient, and a real, giggly personality comes through. Here is what typical sleep, feeding, and development look like at three months, plus a sample day and the questions parents ask most.

Your baby at 3 months at a glance

• Development: Laughing, squealing, and long strings of cooing arrive, alongside real hand discovery and swipes at toys.
• Sleep: Around 14–16 hours a day, with naps starting to settle into a rough morning, midday, and catnap pattern.
• Feeding: Still exclusively milk, often dropping to around 6–8 feeds a day as feeds become bigger and more efficient.
• Fun fact: Your baby may start laughing out loud this month — often at the smallest, silliest things you do.

Sleep at 3 months

Total sleep settles slightly to about 14–16 hours across 24 hours, with night sleep stretching to 9–11 hours in longer, more consolidated chunks. Day sleep totals around 4–5 hours across 3–4 naps that are becoming noticeably more predictable, and wake windows lengthen to roughly 75 minutes to 2 hours.

What to expect	Typical range
Total sleep per day	14–16 hours
Night sleep	9–11 hours, more consolidated
Day sleep	4–5 hours
Naps	3–4 naps, more predictable
Wake window	75 min – 2 hours

Sleep is starting to organize itself, and you may see a rough pattern of a morning nap, an afternoon nap, and a shorter late-day catnap. This is a great time to lean into a simple, calming bedtime routine. Keep following safe sleep — back, alone, bare crib — until your baby’s first birthday.

Sample 3 month old schedule

Time	What’s happening
7:00 AM	Wake and feed
8:30 AM	Morning nap
10:00 AM	Wake and feed
11:45 AM	Midday nap
1:30 PM	Wake and feed
3:00 PM	Afternoon nap
4:30 PM	Wake and feed
5:45 PM	Short catnap
6:30 PM	Wake and feed
7:15 PM	Bedtime routine
7:30 PM	Bedtime
12:30 AM	Night feed
4:30 AM	Night feed

For a deeper dive into naps, wake windows, and how to handle short naps at this age, see our full 3 month sleep schedule guide. For the bigger picture across the first two years, our wake windows by age guide is worth bookmarking too.

Feeding at 3 months

It is still exclusively milk, and solids are not on the menu yet. Many babies now take fuller feeds with longer gaps in between. Your baby may get distracted mid-feed as the world becomes more interesting, which is completely normal.

• Milk remains the only food, breast or formula, with no water or solids needed yet.
• Feeds often drop to around 6–8 a day as they become bigger and more efficient.
• Distraction during feeds is common now — a calm, quiet spot can help your baby focus.
• Continue any recommended vitamin D, and let diapers and steady growth reassure you feeding is on track.

Development milestones at 3 months

Gross motor

• May push up onto forearms during tummy time and hold their head steady, a big strength milestone.
• Typically holds head up well when supported upright, making sitting on your lap easier.
• Might begin pushing down on their legs when feet are on a firm surface, an early precursor to standing much later.
• May open and stretch limbs with more control as reflexive movements fade.

Fine motor

• May bring both hands together and to the mouth, discovering that hands and mouth work as a team.
• Might swipe at or briefly grab a dangling toy, an exciting new coordination step.
• Typically discovers and studies their own hands, often staring at them with real fascination.
• May hold a rattle placed in their hand for a moment before it slips away.

Language & social

• May laugh out loud and squeal with delight, one of this month’s most rewarding milestones.
• Typically coos in longer strings and takes turns vocalizing, an early rehearsal of conversation.
• Might smile at people spontaneously, not just in response to your smile.
• May imitate some of your facial expressions, showing early social mirroring.

Milestone checklist: 3 to 4 months

Every baby moves through these skills at their own pace, so treat this as a general guide of what most babies are doing rather than a strict test.

• Holds head steady when upright and pushes up on tummy
• Brings hands together and to the mouth
• Laughs and squeals
• Coos back and forth in a turn-taking way
• Follows moving objects smoothly with eyes
• Swipes at hanging toys
• Smiles spontaneously at familiar people
• Turns head toward sounds and voices
• Shows excitement, like wiggling, when they see you
• Recognizes familiar faces from a distance

When to check in with your pediatrician

Most three-month development is right on track, but bring these up with your pediatrician:

• Cannot hold head steady at all when upright
• Does not smile at people
• Does not coo or make sounds back to you
• Does not follow objects with the eyes or seems to have crossed eyes most of the time
• Does not push down with legs when feet touch a firm surface

Any lost skill, or anything that quietly nags at you, is worth mentioning at your next visit — you know your baby best.

Play ideas for this month

Reach-and-bat play. Dangling toys within reach encourage the swiping and grasping that build hand-eye coordination. Hold a soft rattle or toy just above your baby’s chest and let them swat, swipe, and eventually grab it.

Narrate your day. Hearing a steady stream of words, and pauses for your baby to respond, feeds early language and turn-taking. Talk through simple routines out loud, name what you see, and leave gaps so your baby can coo back.

Mirror discovery. Babies are captivated by faces, including their own, which builds social awareness and visual engagement. Hold your baby in front of a safe, unbreakable mirror, point to features, and watch their reaction.

The takeaway

Three months brings some of the most joyful milestones yet: real laughter, hand discovery, and naps that are finally starting to find a rhythm. Sleep, feeding, and play are all settling into something a little more predictable, even if it still shifts week to week. Lean into a simple bedtime routine, keep safe sleep non-negotiable, and enjoy the belly laughs — they only get better from here.