Around 12–16 weeks
3 Months Baby: Development, Feeding and Sleep
Around three months, many babies are more expressive — smiling readily, cooing and batting at toys within reach. Feeding and sleep may feel a little more settled for some families, though there is still wide variation from baby to baby.
These guides describe common developmental patterns, not deadlines. Every baby develops at their own pace.
What this month looks like
Development
Reaching and swiping at toys, opening and closing hands, and steadier head control are common. Many babies enjoy 'chatting' back with coos and gurgles.
Feeding
Milk (breast or formula) remains the complete source of nutrition. Solids are not needed yet — most babies show readiness signs closer to six months.
Sleep
Sleep patterns may continue changing as your baby becomes more alert, mobile and aware of their surroundings. Night waking is still common.
Play
Offer easy-to-grasp rattles and textured toys. Tummy time can gradually get longer as neck and shoulder strength builds.
Safety
As reaching and rolling attempts begin, keep small objects and cords out of reach and never leave your baby alone on a bed or sofa.
Medical guidance
Bring any questions about feeding, sleep or development to routine check-ups. Contact your doctor if your baby seems unusually floppy, isn't feeding, or has a fever.
The weeks in 3 Months
For week-specific guidance, open any week below.
Medically reviewed by Dr. Megha, MD, DNB (Paediatrics) · Last reviewed July 26, 2026. General information only — not a substitute for advice from your own paediatrician.