Ah sorry I wasn't around. I'm not sure how long ago last test was, but 88 is comfortable number. I'm not sure the last time you fed, but we say you're not safe until he's rising on his own after 2 hrs without food.
Yes, I'd aim the best you can for 0.25 and see what happens. Hopefully we can get some cycles without the devil treats to see where he settles, he just doesn't want to make it easy!
Eating his dinner at PS is fine, and what should happen. But I would feed additional LC at +1 and +2 and hopefully slow him down just a smidge.
It's funny, he's reacting to ProZinc more like it's Vetsulin, don't usually see such a harsh action from ProZinc. If the Libre is any indication he gets good duration on LC-only cycles though so that's good.