I have a diabetic, who was diagnosed 3 years ago. Moby is on what's called "PZI" (protamine zinc) insulin. I seem to remember it took about 6 months to get her regulated. She never went above 3 units twice a day (bid); now at 2 bid. There are different insulins that work better for some cats than for others. www.felinediabetes.com has a wealth of information; they are very big on blood testing. I'm not sure if you want to go there. I don't blood test Moby, but want to learn how to do it.

It's best to stick with one vet's protocol; vets have different strategies for managing diabetes.

Glucose levels (single-point) are not very accurate. Stress can spike glucose. Ask about "fructosamine" test. This measures longer-term regulation. Moby's fructosamine topped out at 565 (poor) and is now at 365 (very well regulated.)This test is typically done every 6 months. I get her kidney values tested at the same time.