Safe sleep rules still apply
Always place your baby on their back to sleep, on a firm, flat surface, with no loose bedding, bumpers, or toys. Even if your baby can roll, continue to place them on their back to start sleep.
Social and emotional development
The social smile — a real, responsive smile in reaction to your face — is well established by three months. Your baby will also begin to show early signs of excitement (kicking legs, waving arms) when they see you or a familiar face approaching.
Babies this age are absorbing everything. Face-to-face interaction, talking, and responding to their sounds all support social and emotional development. You don't need activities or toys — your attention is the most important thing.
- Smile and talk back when your baby coos
- Mirror their expressions
- Make eye contact during feeds and play
Feeding at 3 months
Breast milk or formula remains the only food at three months — solid foods aren't introduced until around six months. Most three-month-olds feed every 3–4 hours, though individual variation is normal.
If breastfeeding, you may notice your supply has regulated and your breasts feel less full — this doesn't mean your supply has dropped. If you're concerned about intake, wet diaper count and weight gain are the most reliable indicators.
Sleep at 3 months
Sleep is usually becoming slightly more organized at three months, with longer stretches at night — some babies sleep 5–6 hours, though many do not. Most babies still need 2–3 naps during the day.
Total sleep at this age is typically 14–16 hours per day. Consistent bedtime routines (bath, feed, song, sleep) can begin to help signal that nighttime sleep is different from daytime naps.
Tips for this stage
Narrate, sing, and respond
Your baby is building language foundations by listening to you. Narrate your activities, respond to their sounds, and sing songs. Repetition and tone matter more than the words right now.
Make tummy time fun
At three months, tummy time should be 15–30 minutes total per day in short sessions. Get down at their level, make faces, or hold a high-contrast toy in front of them to make it engaging.
Try a bedtime routine
A consistent short routine — bath, feed, song, sleep — can help your baby begin to associate it with night sleep. It doesn't need to take long; 20–30 minutes is enough.
3-month checklist
Developmental milestones
Milestones are typical ranges, not deadlines. Speak with your pediatrician if you have concerns.
Motor
- Holds head steady when upright
- Pushes up on forearms during tummy time
- Opens and closes hands; bats at objects
Language
- Coos, gurgles, and makes vowel sounds ('ooh', 'aah')
- Turns head toward sounds
Social
- Social smile well established
- Makes eye contact and responds to faces
Cognitive
- Recognizes familiar faces and voice
- Follows moving objects with eyes