Welcome to 3FC!
Why not have a family meeting around the table to discuss what foods you like, and which ones are acceptable for a healthy lifestyle? We do that a couple of times a year. One or all of you can make lists, and you can figure out some menus that'll work for everyone. It's not easy, but it is possible.
It's sounds like you're off to a good start. Keep at it with the water and exercise, etc!!