First and foremost, I pray for speedy recovery.
How bad is the pancreatitis? Do you think you can manage it at home. Treatment is supportive care. Anti nausea, pain med appy stimulant if needed, anti vomiting meds. Maybe subq fluids and B12 shots are not a bad idea.
Regardless of what meter you use, a low is a low and a high is a high. What do they consider low? An IM in ER by me who does take on normal primary care, told me she likes to keep cats in the 200s (U.S. measurement, I don't remember the conversion). Needless to say I did not go to her.
Next is the skipping of insulin. remind them DKA happens if not enough insulin, infection (pancreatitis in this case), and not eating. A lot of cats will eat the a/d food. Yes it's higher in carbs, but you need them to eat so they get the insulin. You just dose around the glucose. Pancreatitis comes first. You can always get insulin back on track. I
Yes I know you don't want to go backwards. Sometimes you have to. When my Ollie had her 1st pancreatitis it lasted 6 weeks. She was never hospitalized. It was really hard to keep up with it, but I got into a routine, slept in couch so I could hear her. My vet was good and kept me supplied with all the meds. Ollie did eat though, maybe not a lot but enough.