I recently adopted a diabetic cat; she was diagnosed in September. The shelter had her on Royal Canin Glycobalance, but that seems too high-carb to me, and it's very expensive. I want to switch her to a low-carb commercial diet, probably Fancy Feast or something similar. The shelter had her on a dose of 3 units of PZI. I haven't been able to start hometesting yet (although I'll be starting before I switch her food), but her BG levels at the shelter were around 150 at her nadir. When I switch her food, should I lower her insulin dose to start? I don't want to risk hypoglycemia, obviously.