I am concerned about your vet's advice. A lack of calories and a lack of insulin are leading contributors to DKA. If you withhold food and reduce insulin, there is potential for Bandit to fall back into that again. You've seen his ketone level decline and his BG start to lower using your current approach. I don't understand why your vet would want you to change directions at this point.
I am not an expert in DKA. I've never dealt with it myself. So I really hope that some of our more experienced folks will chime in and share their thinking in case I'm wrong. This just doesn't sound like a good idea to me. Maybe revisit that link that Kris shared in post #19, and some of the info that was shared on your original thread (the one that was closed).
@Jill & Alex (GA) @Tanya and Ducia @Kris & Teasel @Bobbie And Bubba I'm not sure who else to tag with this?
Now back into an area in which I do know a few things: It's so great to see that yellow show up today! I just wanted to give you an idea of what to expect next. Because this is the lowest number Bandit has seen to date, he will most likely be back up in the blacks tonight, and maybe tomorrow. When the BG drops lower than the cat is used to, the liver will dump glucose into the blood. It takes a couple of cycles to clean that out. So this process isn't exactly linear. You'll have a good cycle, and it will often (though not always) be followed by a couple of higher, flatter cycles. So if that happens, try not to worry. It's just part of the process. Sometimes a cat gets lucky and will have a few good cycles in a row, but that's less common this early in the game. It happens more as they get closer to being regulated.
Assuming that's what happens, and if you want to keep going with this approach, you'll keep the 3.5u dose for three cycles, and then do the next increase. If Bandit gets another good cycle before it's time to increase, we might reconsider that.
As far as eating, it's really okay to try
anything at this point. Does Bandit have a kibble he likes? Treats? tuna? really anything - you just want him to remember that he can eat on his own again.