Finding a low carb food they'll eat is half the battle...sometimes more than half...LOL
I don't know what your schedule is like, but if there's any way you can get a test in somewhere mid-cycle during the day, it'll really help to know what's going on. Also, if you can get a +2, that's what I call my "crystal ball" test. It can be like an early warning system that your cat is going to go a lot lower during that cycle.
If the +2 is lower than the Pre-shot, that's the time when you should plan on trying to get more tests in or set an alarm at night to get up for another test.
If it's about the same as the Pre-shot, that usually means they're going to have a more "normal" cycle....gradually going down to nadir and then gradually back up to the next PS
If the +2 is higher than the PS, that can indicate they're starting a bounce...and those cycles are the ones where it's safer to take a pokey break and catch up on missed sleep at night...and missed housework during the day...lol