"How does a baby's feeding schedule relate to the 90 minute sleep schedule that you describe in your book? My baby did get tired at 90 minutes, and fell asleep. The only problem was that he woke up 30 minutes later with hunger. He tends to eat every two hours, so he didn't get much sleep in before he was hungry again for a feeding. Hunger seems to disrupt this 90 minute cycle. Can you provide some help to me?
Thank you!"

- Elizabeth, Massachusetts

I can't tell from your post the age of your baby, and my advice will be different depending on his age. When they are newborns, as you know, babies will require pretty frequent feedings, so this phenomenon you describe might be due to his young tender age, and he may outgrow it with time.

Its also true that in the very young babies especially it can be hard to tease apart which are the signs of hunger and which are the signs of sleepiness. It is easy to be tricked. Very tired babies are often eager to nurse or feed. The process of sucking is very focusing for them and helps them fall asleep. Sometimes if you make sure the baby's fed early on in the 90-minute alertness cycle, then you will be able to pick out the difference later which is which, hunger vs sleepy.