10 Week Old Baby: Nearing 3 Months and What to Expect

Your Baby at 10 Weeks Old

A 10 week old baby is nearing the 3-month milestones — smiling on their own, following your face and moving objects, and holding the head steadier during tummy time, according to the Canadian Paediatric Society. Feeds run on cue, and a 10 week old may sleep up to 18 hours a day, for 3 to 4 hours at a time, with sleep becoming more predictable after 3 months.

Your 10 week old baby is on the cusp of the 3-month mark — a stretch many parents describe as a turning point. Smiles come more freely, the head is steadier, and there’s more genuine back-and-forth by the day.

This guide covers what to expect this week: the milestones coming into view, feeding and sleep, and how to support your baby as you approach the calmer waters of 3 months.

Your Life This Week: The Parent Experience

Ten weeks in, many parents feel a shift approaching — more smiles, steadier days, and the first hints that sleep may organise soon. It’s still demanding, but the reciprocity is real now: your baby is responding to you.

Use your baby’s brighter awake windows for connection and their sleepy stretches for your own rest. Keep leaning on help where you can.

The “baby blues” affect up to 80% of new mothers and usually ease within a few weeks, the Canadian Paediatric Society notes. If low mood, anxiety or a sense of disconnection lingers or feels heavier than that, it may be postpartum depression, which affects about 13% of new mothers, and as many as 10% of fathers. It is treatable — please tell your doctor or public health nurse.

Feeding Your 10 Week Old Baby

A 10 week old baby feeds on cue. The Canadian Paediatric Society advises feeding on demand — whenever your baby is hungry. Feeds may space out a little as your baby feeds more efficiently, but there’s wide variation, so follow your baby rather than a clock. For formula, follow the feeding chart on your formula’s packaging. The CPS signs of feeding well still apply: six or more wet diapers a day, a content baby, and steady weight gain.

Any lingering evening fussiness is usually the tail end of the normal peak crying period, which the Canadian Paediatric Society places around 3 to 12 weeks and says usually eases by 3 to 4 months. If crying seems unusual, or you’re worried, speak to your provider.

Whether you breastfeed, formula feed or combine the two, your baby’s brain and vision development runs on the right nutrients — DHA, iron and vitamin D among them. If breastfeeding isn’t an option, the Canadian Paediatric Society advises a store-bought, iron-fortified, cow-milk-based infant formula for the first 12 months — fortified to provide these.

A note on formula this week. As your baby becomes more interactive, feeds are calm moments to connect. MOF’s organic Stage 1 formulas, such as HiPP Dutch Stage 1, are iron-fortified and suitable from birth through 6 months, providing the DHA, iron and vitamin D your baby needs. Formula is a good choice whenever it’s the right one for your family.

Sleep at 10 Weeks: What’s Normal & How to Help

A 10 week old baby may sleep as much as 18 hours a day, for 3 to 4 hours at a time, according to the Canadian Paediatric Society — and waking to feed at night is still normal. Encouragingly, the CPS notes sleep habits become more predictable sometime after 3 months, so you may be close to seeing longer, more regular stretches.

This is developmentally on track. There’s no need to force settled nights before your baby’s body is ready; the shift tends to come on its own as your baby matures past 3 months.

Keep reinforcing day and night: bright, active days and calm, dim, quiet nights. Put your baby down drowsy but awake when you can — a gentle habit that supports self-settling as sleep organises. Protect your own rest where possible.

Safe sleep reminder: always place your baby on their back for every sleep, on a firm flat mattress with a tightly fitted sheet and no loose, soft items, in a crib, cradle or bassinet in your room for the first 6 months. The Canadian Paediatric Society advises this lowers the risk of SIDS.