Baby's First Year
Month 3 — Finding Their Voice
Baby This Month
approximately 58–63cm and 5.5–6.5kg
Month 3 is when your baby really starts communicating — cooing, gurgling, and making a range of vowel sounds as if testing out what their voice can do. They will talk back when you make sounds, kicking off the back-and-forth conversational exchange that forms the foundation of all language. Physically, head control is much better — most babies can hold their head steady when upright and push up onto their forearms during tummy time. They're starting to bat at objects within reach, discovering cause and effect for the first time.
A second round of vaccinations typically happens at 3 months (timing varies by country), including second doses of the vaccines from Month 2. Your baby is likely settling into a more predictable feeding routine now — 5–6 feeds per 24 hours for formula-fed babies, slightly more for breastfed babies. Sleep is still broken but may be getting slightly better, with some babies doing a longer stretch of 4–5 hours at night. If sleep feels impossible, that's still completely within normal range.
By 3 months, your baby has already figured out that they can influence the world around them. If they make a sound and you respond, they learn that their actions cause reactions — this is one of the earliest forms of reasoning. The moments when you copy your baby's sounds back to them aren't just cute; they're teaching your baby the mechanics of conversation. The back-and-forth starts here and is the building block of every social skill they'll develop.
Three months is often when parents feel the pressure to get their baby on a schedule. The most useful thing to establish is a consistent wind-down sequence before sleep — dim lights, feed, gentle song or white noise — that signals sleep is coming, rather than a rigid clock-based schedule that stresses everyone out when it doesn't work.
Keep up with your prenatal vitamin through the fourth trimester if breastfeeding — your nutritional needs remain elevated. Vitamin D drops for your baby (400 IU daily) are recommended from birth if breastfeeding.
This content is for informational purposes only and is not medical advice. Read full disclaimer
The fourth trimester is ending — start having honest conversations about how the division of labour at home is working and adjust if needed before resentment builds.
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