It's right on the limit, possible perhaps, but not likely. It's also possible that the depot got over full between 10/1 amd 10/4 and if that were the case, we may still be seeing a touch of influence from that. Though of course we can't know for sure
LOL funny I looked at the 99 that same day and thought with variance, he was probably flat that day and the PS possibly blue.
Usually when dry has such a huge impact we see those sort of change within a couple of days of stopping the dry food. But who knows how long it actually takes for the effects of the dry to finally work it's way out of the system
This is a difficult question, there really isn't enough data on how Fluffles cycles evolve when you shoot low. The lowest you've shot is 97 and 99, both those cycles turned out pretty flat and safe, even though he did dip below 90 and earn a reduction. I would not shoot below 90 on days when you can't monitor, and if Fluffles obliges, shooting in that range when you are home to monitor and gather some data will probably help you answer those questions.
It is important to keep Fluffles safe and with being away all day, it's sensible to exercise caution particularly when something does appear to have changed. If you have a few days of it's ok to attempt to be a little more aggressive when you are around to monitor and perhaps experimenting with a drop dose, and higher low carb food to see what that yields in terms of numbers, that way you can find yourself in a position to confidently shoot when you are not going to be able to monitor.
Certainly the numbers look promising, so hopefully he won't keep you on the edge of the seat for too log.