I'm glad you skipped Julie.

That'll give the depot a chance to drain, and hopefully you'll have some calmer cycles until the depot builds on his new reduced dose.
That +2 being 80pts lower was Taffy giving you a heads up for more testing, bear that one in mind, though I think you already realized that.
I don't generally see a late onset with Taffy, it looks like his onset is somewhere around the +2, if you look at some of his PS and then the +2, you will see that often, in an active cycle that is where you will see the drop as the insulin you have just shot starts to take effect, On a bounce cycle, he is staying flat.
When they clear a bounce all bets are off and you might see them dropping at a different point in the cycle with nadirs being earlier or even later than usual.
As for the food some cats are more carb sensitive than others, so if you find that he is not coming up quickly enough trying a little more carb and seeing how that goes might be worth a try, but I thought that yesterday morning he responded rather well to the food you gave him. George isn't hugely carb sensitive, when he dived hard and fast, particularly if it was early in the cycle and he dipped below 50, I would have to bring out the big guns 28%, and even then at times I had to add honey to that to steer him up. If I didn't the insulin got ahead of us and we spent hours trying to keep his numbers up. It was a fine line between too much carbs, I didn't want to send him to the moon (and the 28% gave him soft poo) but at the same time hours of fighting numbers in the 30 and 40s is no fun.
ETA congrats on the reduction.