Hi Denise,
I want to echo what Libby and Lu said earlier. When a kitty switches from prozinc to one of the "L" insulins, I think the hardest part on the bean is to understand that you have to forget a lot of what you learned, and try to think differently.
You saw in PZI that some cats, with inverse curves, or high and flat cycles, whose doses were reduced then saw an improvement on a lower dose, right?
Well, from what I have seen, and learned, Lantus and Lev don't work the same way. I know your instincts are telling you that if you reduce, you might see lower numbers for Shakes, like you may have seen when he was on prozinc. Lots of L users have said it doesn't work that way, and IMO, they have the experience to know.
The best thing you have going for you right now is that there's a protocol to follow. You have a dose, you stick with it for a specific number of cycles, and you increase if the numbers don't improve. The only time you ever have to think "decrease" is if you see numbers that are low enough to warrant a decrease according to the protocol. The other thing you have in your corner is a whole lot of very experienced people helping you out, and they aren't going to steer you wrong.
Shakes is going to do better, Denise. You just need to be patient and let the insulin and the guidelines get him there.
Chin up, kiddo,
Carl