Hello, My Cat Garfield is 12 years old and I brought him to the vet when i noticed significant weight loss. He was diagnosed with diabetes with a blood sugar level of 513 at the time of the visit. The vet suggested that I could either just try to change his food and see how that worked but most likely that he would need to go on the insulin anyway, I chose to start the insulin immediately. He had me start out at 2 units twice a day, I did that and didn't really notice a change in my cat. called them back they had me increase him to 3 units twice a day. After a week or so at the 3 units I decided to check his level as I have gestational diabetes I used my glucose meter and his numbers were still very high, in the high 400's and I called the vet back again and they said to up him to 4 units twice a day. I did that for a day or two and his numbers were still high in the high 400's - mid 500's. After speaking with a friend that had two cats with diabetes she suggested to change the food to wet food I did that the vet said to get grain free which i also did. I have been giving him the wet food and monitoring him all day today, and this am I gave him only 1 unit as per the advice of my friend we think he may be getting too much insulin. Please any advice you could give me I never had to deal with this before and I have two small children and am 28 weeks pregnant with my 3rd child I am trying everything that I can for him but I can't seem to get his numbers under control... I just started today with the 1 unit and have been monitoring him all day. He is on Vetsulin.