My cat, Sherlock, is such a sweet kitty. He's so good with my kids, he never, ever hisses at them or tries to attack them. I just learned today that he has diabetes. He is only a year old, so I'm a little shocked. And I'm concerned about how much everything is going to cost. I got an estimate from the vet, which includes food, insulin, syringes, etc. I was wondering what you more experienced "cat parents" feed your little guys. Do you buy prescription food? And where do you get your insulin? I"m on a really tight budget, but I want to do all I can for my guy.