🍼 Age-based baby guide

Week 9: Many babies now feel like lively little companions – they spend more time calmly awake, share bright social smiles, coo when you chat, and then crash into sleep again once their hard-working brain and tummy have had enough.

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Key points

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Around nine weeks, lots of babies have a few clearer awake windows in the day where they look around, kick with more control, and seem very interested in faces, light, and sounds.
Social smiles are often easier to see now, and many babies start to coo or make soft “ah” and “oo” sounds when you smile, talk, or sing to them, as if they are practising their first little conversations.
Feeding still takes up a big part of the day, but some parents notice their baby feeds more efficiently, with smoother sucking and swallowing and slightly longer gaps in between at certain times.
Crying often peaked in the last few weeks and may slowly start to ease for some babies, but strong fussy spells – especially in the late afternoon or evening – are still very common at this age.
Sleep is usually still broken into short stretches across day and night, and there is a wide range of total sleep between babies, so it is very common for nights to remain unpredictable.
Short playtimes now feel more fun: your baby may enjoy following a toy with their eyes, batting at a dangling rattle, or chewing on their own hands while you chat and smile nearby.

Feeding

Guide

At around week 9 many babies still feed often both day and night, and responsive feeding – offering breast or bottle when they stir, search with their mouth, or suck their hands – usually fits well with their small stomach and steady growth.
You may notice that feeds feel a bit more organised now, with your baby latching more quickly, sucking and swallowing in a steady rhythm, and relaxing their fists and shoulders as their tummy fills.
Some babies still have “hungry days” or evening cluster feeds when they ask for several feeds close together, which many parents link to growth and comfort rather than anything they have done wrong.

Sleep

Guide

At nine weeks many babies still sleep for a large part of each 24 hours, often somewhere in the mid-teens of hours, but in lots of short chunks, so waking several times at night is still very common.
Parents are often advised to place their baby on their back in a clear, flat sleep space in the same room as an adult, keeping pillows, duvets, and soft toys away from the face and keeping the room smoke-free to support safer sleep.
Some families gently show the difference between day and night by having normal light and everyday noise for daytime naps, and keeping night-time care quiet and low-light, while still following the baby’s feeding and sleeping cues.

Pee and Pooping

Guide

By this point many babies have a fairly steady rhythm of wet nappies and soft poos, which might be mustard yellow, brown, or slightly green, often arriving with dramatic squirts or very serious “poo faces”.
Some babies poo several times a day, while others poo less often but in larger amounts, and parents usually come to recognise what is typical for their own baby and notice quickly if it changes.
If wet or dirty nappies suddenly become very rare, or if you see very pale poo, blood, or other changes that worry you, you are encouraged to contact your midwife, health visitor, paediatrician or local emergency service.

Learning

Guide

Around nine weeks many babies are practising early social skills, such as holding eye contact for longer, smiling in response to your face or voice, and making little coos when you talk or sing.
A few times a day, for a few minutes when your baby is calm and awake, you might sing a favourite song, tell a tiny story, or slowly move a simple high-contrast toy from side to side so they can try to follow it with their eyes, stopping when they look away or seem tired.
Short, watched bits of tummy time on your chest, across your lap, or on a firm surface help your baby practise lifting and turning their head and using their arms, and many families weave this into daily life, such as one song or rhyme’s length several times a day.

Sources

This content is general information only and is not medical advice. If you are worried about your baby, contact your midwife, health visitor, paediatrician, or local emergency service.