Georgie was diagnosed with diabetes just over a week ago. We started him in insulin and his appetite was ravenous. Vet said he was allowed to eat as much as he wants for now. But since 10:30pm last night, since his last dose of insulin, he has almost no appetite. What he has eaten, he vomits. He won't even eat his treats. I don't have a glucometer yet and the vet is closed until Monday. What should I do? Should I skip his next insulin dose and see if that helps?