3 months
3 Month Old Baby Milestones: Complete Development Guide
At 3 months, your baby is becoming a little social butterfly. They're pushing up during tummy time, cooing like a chatty companion, and lighting up with real smiles. Here's what to expect at this joyful age.
When to worry — talk to your pediatrician
Every child develops at their own pace. Contact your pediatrician promptly if your child shows any of these signs at 3 months:
- Doesn't track moving objects with eyes
- Doesn't smile at people
- Doesn't react to loud sounds
- Can't support head well
- Doesn't push up on arms during tummy time
What's typical at 3 months
- Pushes up on forearms during tummy time
- Lifts head and chest to 45-90 degrees
- Stretches and kicks legs when lying on back
- Opens and closes hands
- Brings hands together at midline
- Cooes, gurgles, and makes pleasure sounds
- Turns head toward sounds and voices
- Uses different cries for different needs (hunger vs. tired)
- Smiles when you speak to them
- Smiles spontaneously at people
- Begins to imitate some movements and facial expressions
- Enjoys playing with others and may cry when play stops
- Shows interest in faces over objects
- Follows moving objects with eyes from side to side
- Recognizes familiar people and objects at a distance
- Shows interest in new environments or objects
- Begins to swipe at dangling toys
- Eats 6-8 times per day (breastfeeding)
- Or 4-6 ounces per feeding (formula)
- Shows interest in watching others eat
Activities to try this week
5-10 min, 2-3x daily
Place baby on tummy with a rolled towel under their chest. Place a mirror or toy just above eye level. Encourages pushing up on forearms and builds upper body strength.
10 min
Make sounds and wait for baby to coo back. Repeat their sounds, add new ones, and use a sing-song voice. Builds early language and turn-taking skills.
5-10 min
Hang a soft toy within arm's reach above baby during playtime. Encourage them to swipe or bat at it. Develops hand-eye coordination and reaching skills.
5-10 min
Place baby on different safe textures — a soft blanket, a textured mat, or grass with a blanket over it. Describe what they're feeling. Builds sensory awareness.
Common questions
Most 3-month-olds sleep 14-16 hours total: 8-10 hours at night (with 1-2 feedings) and 4-6 hours of daytime naps, usually 3-4 naps.
Many babies laugh between 3-4 months, often in response to tickling, peekaboo, or silly faces. If your baby isn't laughing by 4 months, it's still usually normal — mention it at your next checkup.
Yes! By 3 months, babies clearly recognize their primary caregivers, often smiling more at familiar faces and becoming cautious with strangers.
Yes, increased drooling is common at this age as saliva production ramps up. It doesn't necessarily mean teething is imminent — that usually starts closer to 4-7 months.
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