Hi there, FurBabiesMama (I'm sorry, I don't remember your name
). I read through your post out on Main. Thanks so much for linking that. It looks like that is focusing on a food discussion, so I'll just post about dosing over here. That blue mid-cycle you got when you lowered the dose is pretty common. I don't know how to explain it, but I see it quite frequently that someone lowers the dose, the kitty gives a good cycle or two.....and then goes right back to where they were. It kind of gets our hopes up, but then doesn't quite work out.
As you mentioned, you did slow, steady increases, but they might have actually been a little too slow and led to some insulin resistance. There is a sweet spot on the dose increases that differs a bit from one cat to the next. You have to move slowly enough to give them time to adjust, but fast enough to stay ahead of them.
So assuming that you keep the food steady, and stay on prozinc, I would recommend moving forward with some increases every six cycles (three days) until you start to get some wonky numbers, and then post again and we can see if you need to move slower than that. Quite often the wonky numbers are just a matter of timing (if you stall without feeding, they catch up), but sometimes adjustments need to be made.
Now, if you change food, you may need to adjust that to accommodate the shifts in carb/protein, but monitoring will let you know what you need to do.
I think a good thorough vet visit is a great idea. It sounds like you may be seeing some symptoms of IBS, pancreatitis, or dental issues. So having the vet run labs and give a careful look at the teeth will be important. And if she hasn't had a cleaning this year, I would suggest getting one, even if the vet says everything looks okay. Problems can hide under their gum line and can't be seen until they are asleep and can do the x-ray. Secondary health issues are quite often the cause of unresponsive numbers, so trying to figure that out might make a difference. I'm on that little scavenger hunt myself these days with my kitty.
Also, if you aren't already, make sure you're checking for ketones with the fussy eating. They can sneak up quickly.
Finally, once you have sorted the food situation, gone through a full exam at the vet, and tried some increases, if you're still not seeing any change, then yes, I would recommend looking at a different insulin. Sometimes it's just a matter of matching the cat with the insulin. However it's strongly recommended to just make one change at a time, so that's why I would suggest holding off on the switch until the other things are settled.
Whew! That was a lot. Please let me know if you have any questions or need more explanation about any of that!
