Try not to get discouraged, you are doing a great job! No, this current wave is the bounce starting due to the greens last night. The good news is the last few bounces he has been breaking quickly. Remember what I mentioned on your post in the main forum that not all cycles will look the same.
It takes time and a little patience to get to a more well regulated place, albeit I know how frustrating it can be to get greens one cycle then back to stinky pinkies the next. How do you find Sam is doing / feeling otherwise? Sometimes we get so caught up in the numbers that we forget to see what’s called the “whole cat report”. This bounce shall pass, what goes up inevitably comes down, so hang in there

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Since he was under 90 last night, I would suggest you reduce to 1.75u. I see you went back to 2u this morning, but I would try 1.75u tonight and going forward, unless of course he drops under 90 again.
here is yesterday for continuity.
https://www.felinediabetes.com/FDMB...236-9-274-pmps-166-1-108.271600/#post-3023080