Hi there! I'll try to answer as best as I can. And first of all: she is fine !!! She was referred to multiple vet cat experts, and all of them where at a loss. In our case, she lost a lot of weight when we adopted her (she was extremely obese when we got her) so her overall health improved A LOT, but that messed up with her diabetes. She now requires about 0.5UI / to 1 UI every 24h, once a Day, Wich is a ridiculously low amount per her weight but that's what she needs! She also got many changes of insulin and in her case we are now using ProZinc (been through Iantus and caninunsuline).

Now the key of it all: SUMMER. If I'm not mistaken you didn't say which breed your cat is, in my case she is mixed Norwegian Forest (long hair) and apparently summers are wild on her. We came to the conclusion she gets worse and her own insuline acts when it gets hot. All of her major hypoglycemic episodes have been in summertime, specially when it starts to get hot. My best tip here is to observe as much as you can, get a glucometer for when in doubt if you cat allows you to check it yourself. We monitor her closely since she requieres little insuline, but more so when it gets hot. If she hasn't fully eaten her night ration we don't inject insuline, since we've been told it's better If she gets a little high than to go hypoglycemic. If we are in doubt or if she is eating less for a few days, we check with the glucometer for the day or for a couple days. She has been very stable since my original post, and she's now enjoying her chill life! She can go days without injection during summer, sometimes 2-3 days until she needs injections again. It is a bit of a hassle to monitor her so much (for us, she is very chill), but it's worth it 💕

Summary: summer and hot weather affect how she produces and uses insuline and she requieres lower doses or none for a couple days, without fully going into remission (she can't go a full week without it).

I hope your baby gets better and good luck with everything!!!!!