so i have a RF tortoise hes about 5-6 years old and is 6-7”, ive just discovered recently that he needs protein. so, im stuck trying to figure out how to give it to him and what to give him. im currently hard boiling some eggs to give him one. can i give him the shell too? i know its calcium. but other than eggs what can i give him? ive tried superworms already and he wasn’t remotely interested. im open to anything!