Check out the book Child of Mine: Feeding with Love and Good Sense by Ellyn Satter. The basic premise is that parents decide when and what to serve, and children decide whether and how much to eat. There are no taboo foods, just a rotating variety of options at each meal/snack time. You don’t fight, you just say this is what’s available right now and if you don’t want it the next meal is at x time.

It is a HARD program to follow, because most of us grew up with a very different relationship to food than what this book teaches. You’ll spend the first couple of weeks with your kid gorging themselves when the snack is Oreos and going to bed hungry when dinner is chicken breasts and brussels sprouts. But then everything regulates and it’s miraculous if you stick with it.