How much milk does your baby really need? Your newborn's tummy grows quickly in the first month, and so does their milk intake Day 3: About 22-25ml per feed (small but mighty Day 8: Around 45-60ml per feed (their tummy is growing fast a). 1 Month: About 80-150ml per feed (a big leap in just a few weeks tr). Babies grow quickly, and their milk intake grows right along with them. Frequent feeding is completely normal your body is designed to meet their needs Hope you found this helpful, share and