In the book Cosmic, Liam finds a book that his dad uses to talk to him. Here are some suggestions of what I think should be added.
One: If your teen does not want to talk, do not trap them, ask them and make it feel natural.
Two: If your teen does not want to eat something, put a little bit in their next meal secretly.
Three: A way to bond with them is to play their games. Ask them about the games and try them.