Lisa, if it doesn't bother you, get a frozen chick from the pet shop, defrost it in boiling water, cut it up into 4 or 5 pieces with scissors so he can smell the blood and guts then feed. Be sure the the blood doesn't splatter on to your lip as you cut into it. Lol.Nightcrawlers, superworms, hard boiled eggs, scrambled eggs. The only protein he likes is rehydrate or wet dog food and I'd rather give him something else. I need to try chicken next.
Animal protein is full of vitamins they need, including vitamin D. So if your tort is indoors a lot it's a good source. This is another reason a prefer animal protein.