I'd go ahead and go back to 1.0u. Just know that it has the potential for getting him into the 30's, and he got there without much in the way of advance notice last time. He was 200+ at pmps and then you got the warning of the green 69 at +2.5, then the 30's. I think you have a choice of going to 1.0u or just a shade under. If you're able to monitor, I'd go to 1.0u. Last time it took him 11 cycles before he got in the 30's, and there were lots of green numbers before that happened. No guarantee that what he did before on 1.0u is what he'll do this time, but those are some observations that you could watch for to help you have a "heads-up" that he might be thinking about going that low again.
A second thought - You might want to consider a shave to the dose next time instead of doing a full 0.25u reduction. Seems like the 0.75u was only able to get him just below 200 this time.
Have a great time on your weekend. It's nice that Wrigley is portable. We took punkin all over with us.