You have received some really great suggestions, the wax is a life saver, and you will find more foods as you get your head into the braces game, a Google search will help and a good quality whey protein powder to mix into the shakes helps for nutrition. The main thing I want to add is for pain relief and healing. My ortho didn't offer this advice, but my GP did: for instant pain relief use chilren's liquid benedryl (store brand works)--mix 2 parts benedryl to 1 part water and swish around in the mouth, then spit it out. The benedryl instantly numbs mucous membrane stopping the pain and can be used as often as needed. For faster healing when the cuts appear inside the mouth mix 50% benedryl with 50% milk of magnesia (again, store brand) and apply to the cuts with a Q-tip, the benedryl stops the pain and the milk of magnesia speeds healing, seemingly overnight. I don't know why the milk of magnesia works, but it does. Fifteen years later I still use this mix if I get a sore spot in my mouth or if I bite my cheek or tongue when chewing. My second suggestion is a Water Pik. He can use warm salty water in it to reduce irritation on the gums and keep those braces clean, clean, clean. For those days when the mouth is too sore to brush properly, the Water Pik will save him from bacteria buildup that can stain his teeth, create cavities and cause gum disease. I still love my Water Pik and add a bit of mouthwash to the water for that super clean feeling and fresh breath.