Ideally, you should make a fresh bottle every time you feed your baby. At first, this can seem fiddly. So, take your time, measure everything carefully, and once you've made up a few feeds, you'll ...

Amy Brown receives funding from UKRI. She is a volunteer for the charity the Human Milk Foundation. Aimee Grant receives funding from the Wellcome Trust and UKRI. If you’ve been celebrating the news ...