Gma’s cat is a smaller sized cat (when she first got him from the shelter, he looked like an American shorthair but his legs were shorter) but is overweight at 19-20 pounds and has type 2 diabetes (he has had no signs of weight loss, has been that weight for about three years now). He has to get shots twice a day, but the vet said he doesn’t want the cat to loose weight not change his diet. Everything I’ve read has said for a cat to gradually lose weight, or at least get on a better diet. Am I missing something here.