Baby Milestones

Your month-by-month companion

Month 3

Baby's personality emerges. Better head control, more laughter, and increased interaction make this month rewarding.

Quick Reference

Sleep

14-16 hours

Feeding

4-5 oz (120-150 ml) per feeding, 24-32 oz (710-950 ml)/day

Naps

3-4 naps

Wake Window

1.5-2 hours

Talk to your doctor if baby...

•Does not follow moving objects with eyes
•Does not smile at people
•Does not grasp and hold objects
•Does not support head well during tummy time
•Does not make sounds

Should my baby be rolling over yet?

Some babies roll from tummy to back as early as 3 months, but most start between 4-5 months. Rolling back to tummy usually comes later (5-6 months). Talk to your doctor if baby can't hold their head steady or move both arms and legs equally by 4 months.

Why is my baby suddenly fighting sleep?

At 3 months, babies become more aware of their surroundings and don't want to "miss anything." Keep the sleep environment dark and boring, and watch for early tired cues before baby gets overtired.

My baby is drooling and chewing everything - is it teething?

Most babies at 3 months aren't teething yet - drooling and hand-chewing are normal developmental phases as saliva production increases and they discover their hands. First teeth usually appear around 5-7 months. If you see actual teeth or baby seems in pain, it might be early teething.

Can I start sleep training now?

Some gentle sleep training methods can begin around 3-4 months once baby's circadian rhythm develops. Wait until your pediatrician confirms baby can go without night feedings (typically 4-6 months and 14+ pounds/6.5+ kg). More formal methods like Ferber work better at 5-6 months.

How much should my 3-month-old be eating and sleeping?

Feedings: 4-6 oz (120-180 ml) formula every 3-4 hours (24-32 oz/710-950 ml per day) or 7-9 breastfeeding sessions. Sleep: 14-17 hours total (10-11 at night with wakings, 4-5 in naps). Every baby is different - these are averages.

When can I introduce a schedule?

Around 3-4 months, babies develop circadian rhythms and can follow loose schedules. Start with consistent wake time, bedtime, and nap routines rather than strict clock times. Follow baby's tired cues.

ExpectedWhat most babies do
  • •Raise head and chest when on stomach
  • •Support upper body with arms during tummy time
  • •Open and shut hands
  • •Bring hands to mouth
  • •Follow moving objects with eyes
  • •Smile at the sound of your voice
  • •Begin to babble and laugh
VariesWhat some babies do
  • •Grasp and shake hand toys
  • •Take swipes at dangling objects
  • •Turn head toward sounds
  • •Imitate some facial expressions
  • •Distinguish strangers from familiar faces

What's Next

Month 4 · Month 4 often brings rolling, increased interest in toys, and the infamous 4-month sleep regression.