My cat, Wiskerz, was diagnosed with diabetes a few months ago. I took him to the vet yesterday because he's lost more weight and is now down to 6 pounds 14 ounces. He is on 2 units of insulin a day. The vet is making it sound like it doesn't pay to spend money on an ultrasound to find out why he's losing weight because with diabetes the finances can be never ending. I don't want to lose another cat because of not having all the money in the world to spend on tests. His sister was put down 3 years ago for getting sick. I still don't know what it was because I didn't have the $3,000 for exploratory surgery. Anyway, I don't know what else to do. He's on Glycobalance and m/d. I can't feed him more than he's getting because then his sugar will spike but yet, how can he gain weight if I can't feed him more. It's a vicious cycle.