Colic, Reflux or Just Wind? How to Tell the Difference

The most reliable signs: regular wet and dirty nappies (6+ wet nappies a day from day 5), steady weight gain, and a baby who seems content after feeds. If you're concerned, your health visitor can do a weighted feed.

Formula-fed babies can have small sips of cooled boiled water from around 6 months. Breastfed babies don't need water before 6 months -- breast milk provides all the hydration they need, even in hot weather.

Three signs to look for together: they can sit with minimal support and hold their head steady, they've lost the tongue-thrust reflex (don't automatically push food out), and they show interest in your food. Age alone isn't enough -- wait for all three.