Hi Angela! I took a quick look back at your previous posts to see which insulin you are using...ProZinc, correct? The first thing I would say is that your feeling is correct, you should not increase by more than 0.25u at a time with ProZinc. With this insulin, small changes often give you big effects, so you want to go with baby steps when changing dose.
I see by your SS that you have held the 2.5u dose for several days before increasing again. That is great, and I would continue to do that. It can take several days for the dose to settle. However, I would not have increased from the 2.5u dose. Sometimes when your cat is used to running high all of the time, when they start to get some lower numbers, the liver panics and dumps sugar to prevent hypo, even when the numbers are not that low. When that happens, you see a zoom upwards and a high ps#. That's what I am thinking may be happening. You did get some lower ps#s and then some higher. If you could do a full curve, we could get a better picture of exactly what is happening throughout the cycle. I would go back to the 2.5u for a few cycles and then run a full curve when you are able to.
Another thought is that you may have overshot your mark. He may need an even lower dose. You sort of jumped from 1.25u up to 2.5u without holding the dose for enough time to settle at any dose, and some of the dose increases were 0.5u. I'm not being critical of you, I'm just observing the dosing and thinking that your dose may be somewhere in between there. ProZinc is a quirky insulin, it doesn't like variation in dosing much, in my experience. I jumped around like that, changing dose every couple of days and it didn't work well. I finally decided to stick with a dose for 5 days before increasing, assuming the data supported an increase at that point.
Another thing to keep in mind is that ProZinc can be very frustrating in it's inconsistency during the first 45 days of treatment. It looks like you are still about 10 days or so from that mark, so hopefully things will start to settle down soon!
ETA: Please keep posting daily threads here on his progress so more eyes can be on him! It really helps when you can get thoughts from other PZI users. :smile: