If your usually settled baby has suddenly become clingy, hungry and hard to comfort, a growth spurt may be the reason. Growth spurts are short periods when babies grow quickly, and they often bring a few days of extra fussiness, more frequent feeding and broken sleep. They are a normal part of development, and while they can feel exhausting, they pass.
In this guide, we explain what happens during a growth spurt, how to tell it apart from illness or teething, and practical ways to soothe a fussy baby until things settle again. For more everyday baby care advice, visit the Healthy Baby Guide homepage.
What Is a Baby Growth Spurt?
A growth spurt is a brief period of faster physical growth. Babies commonly have them at around 2 to 3 weeks, 6 weeks, 3 months and 6 months, though every baby is different and spurts can happen at other times too. During a spurt, your baby may want to feed much more often, including at night, and may seem unsettled between feeds.
The extra feeding is not a sign that your milk supply is low or that formula is not enough. Frequent feeding during a spurt helps your baby take in the extra energy they need, and for breastfeeding mothers it also signals the body to produce more milk. Most spurts last only two to three days, though some stretch to about a week.
Signs Your Baby Is Having a Growth Spurt
- Feeding much more often than usual, or seeming hungry again soon after a feed
- Extra fussiness, clinginess or crying, especially in the evening
- Shorter naps or waking more often at night
- Wanting to be held constantly and resisting being put down
- A noticeable jump in weight or length at the next health check
These signs alone do not prove a growth spurt, but when several appear together and your baby is otherwise well, a spurt is a likely explanation.
How to Soothe a Fussy Baby During a Growth Spurt
1. Feed on demand
Let your baby feed as often as they ask. Trying to stretch out feeds to a strict schedule usually increases fussiness during a spurt. Offer the breast or bottle whenever your baby shows hunger cues such as rooting, sucking on their hands or fussing. Keep feeds calm and unhurried, and burp your baby gently afterwards.
2. Keep the routine simple
During a spurt, drop the extras. A simple rhythm of feed, awake time, and sleep is enough. Dim the lights in the evening, keep voices low, and avoid overstimulating play when your baby is already overtired. A short, predictable wind-down routine, such as a bath, a feed and a lullaby, helps your baby settle.
3. Use comfort measures
Skin-to-skin contact, gentle rocking, swaddling (for babies who cannot yet roll), and a dummy or pacifier can all help a fussy baby relax. A walk in the pram or a drive in the car also works for many families. Try one method at a time so you learn what actually helps your baby, rather than switching every few minutes.
4. Look after yourself too
Growth spurts often mean broken nights, so rest whenever you can during the day. Accept help with meals and housework if it is offered, and keep water and snacks nearby during long feeding sessions. A tired parent finds fussiness much harder to cope with, so your rest is part of caring for your baby.
Growth Spurt or Something Else?
Fussiness can also come from hunger, tiredness, wind, a wet nappy, teething or feeling unwell. Check the basics first: is your baby fed, clean, comfortable and not too hot or cold? If your baby has a fever, is feeding poorly, has fewer wet nappies than usual, seems unusually sleepy or floppy, or you are simply worried, contact your doctor or health visitor promptly. Trust your instincts; it is always better to ask.
When Will It Pass?
Most growth spurts settle within a few days, and parents often notice their baby suddenly sleeping a little longer or fitting into the next size of clothes. Once the spurt ends, feeding usually returns to its previous pattern. If fussiness lasts longer than a week, or feeding patterns change dramatically and do not settle, talk to your health visitor for reassurance and advice.
The Bottom Line
A fussy baby during a growth spurt is not a sign you are doing something wrong. Feed responsively, keep days calm and simple, use steady comfort measures, and rest when you can. Growth spurts are tiring but short, and they are a sign your baby is growing well.
