Week 3 Newborn
NewbornWhat to expect from day 15 to day 21.
Welcome to Week 3. Your baby is now approaching one month old, and although they are still very much a newborn, you may begin noticing small but exciting changes. Many parents feel a little more confident this week. You may still have difficult days and sleepless nights, but you are beginning to understand your baby's unique personality, preferences, and routines.
Sleep
14–17 hours/day
Feeding
Frequent feeds; growth spurts common
Major milestone
Becoming more alert and aware of the world
Physical development
- check_circleNeck muscles gradually becoming stronger
- check_circleBrief attempts to lift and turn head during tummy time
- check_circleGrowing noticeably — clothes may already be fitting differently
Brain development
- check_circleCan focus on your face for longer periods
- check_circleFollows movement briefly
- check_circleWatches high-contrast patterns with interest
Social development
- check_circleAppears calmer when hearing familiar voices
- check_circleBeginning to show different reactions to different people
- check_circleSpending more time quietly observing
Communication
- check_circleRecognizable differences in cries beginning to emerge
- check_circleResponding to your voice with small movements
- check_circleMaking soft sounds beyond crying
What parents may notice
- check_circleMore time spent looking around — many babies become fascinated by windows, faces, lamps, shadows, and ceiling fans
- check_circleDifferent types of cries — you may begin recognizing hunger cries, tired cries, and uncomfortable cries
- check_circleLoose patterns beginning to emerge around feeding, sleeping, and awake times
- check_circleGrowing confidence with daily tasks like diaper changes, feeding, and bathing
Monthly checklist
- Continue tummy time daily
- Feed on demand
- Attend any scheduled appointments
- Spend time talking and singing to your baby
- Take photos and videos
- Celebrate three weeks together
Frequently asked questions
Is it normal for my baby to stare at things?
Yes. Your baby's vision is improving and they are becoming more interested in the world around them.
Why is my baby suddenly feeding more?
Growth spurts often cause temporary increases in feeding and are a normal part of development.
Is my baby supposed to smile yet?
Most smiles at this stage are still reflex smiles. True social smiles usually appear around 6–8 weeks.
How much tummy time should we do?
Several short sessions each day are usually more effective than one long session. A few minutes at a time is perfectly fine.
Looking ahead
Next week is a significant milestone — your baby will reach one month old. You may begin noticing longer awake periods, stronger movements, and perhaps even the first hints of a real social smile.