Looks like the food change might be having an effect... Have you posted your question on the Lantus forum? They have a lot of experience with this kind of situation over there. With Lantus, as you gather more data, you can move the no-shoot number down from 200 and (eventually) shoot the kinds of pre-shot numbers you are seeing (in fact, I think that forum starts with a no-shoot number of 150, not 200). But it's tricky when the pre-shot numbers are dropping down this suddenly, and it's better if you have experienced people to guide you through the process.
It's nice to see the numbers going down, though! Reducing/removing dry food in favor of wet really can have a big effect.
