My 16 year old cat was just diagnosed....we started him off on 2 units and he was very twitchy and he threw up 3 times but seemed happier and less depressed and lethargic. Today I gave him 1 unit only as my vet said to do but he's very upset he can't eat his fancy feast grilled which he is obsessed with. He ate some of the chunky kind last night but today he wouldn't touch it. He does like the royal canin glyco a little which is a nice surprise. He never cared for dry food and he has no teeth so that is no problem. Vet said to give him two meals a day 12 hours apart but he is barely eating really at this point though I know he must be hungry. Someone mentioned its okay if they snack a little bit in between the meals. Is this okay? If he could eat a little bit during the day here and there that would be great as that is how he usually eats. He was diagnosed two days ago and his blood levels were very high. I take him in on Friday six hours after I give him the shot to check how they are again. He is getting Prozinc. This is all new to me I cold barely steady my hand to give him the first shot I was so nervous!