I agree with Chris, I've often found over time, it sure does depend on where they are at in the cycle, along with getting a feel for how your own cat responds to carbs and what their typical cycles look like. I've seen people use karo in the 50s and that works for them. If I gave syrup, Mav would fly to the moon

. Interestingly enough, Wally's +2s the last couple of cycles would have suggested to most people that there wasn't going to be any action ( +2s were higher) yet look at the shenanigans. Not typical.
Gita, you've been here a while, have you ever tried feeding the curve? It might help to flatten him out a little. You may want to try using some higher LC carb earlier in the cycle, and see what that does. Just a suggestion.
https://www.felinediabetes.com/FDMB/threads/8-10-tashie-pmps-high-questions.101989/#post-1087990