I was a voracious reader when younger, used to get headaches due to reading with poor light. Both my kids read a ton, though my oldest reads a lot less now that she has a phone. Darn phones! Though you can ask her if she’s read some series of books, and she’s read them all.
The youngest one is too fast of a reader. Her teacher in third grade gave the kids an assignment and a time to read part of a book. The idea was to read part of the book (a mystery) and guess who the culprit might be, and write that down along with reasons. My daughter read the whole thing and then complained to the teacher: why should I do the assignment, when I know who the culprit is? Sometimes, she’s too smart for her own good.
But if you’re not familiar with books for children/tweens/teens, there are so many books, and usually series, they can read. I’ve read or listened to a lot of them, and it’s hard not to like them. They have good character development, concern issues in that age group, have good stories (more imaginative than I am), and are exciting.
At some point, I hope they come around to reading non-fiction.
And we try to keep them low carb and eating more meat, but there are so many high carb events. Any time kids meet, there’s carbs. But they have both been playing Minecraft, and they were both complaining that you don’t get much strength or fulfillment from eating meat in Minecraft, but apparently get more from things like fruit. They were aghast at that. That’s good, I guess.