My 10 year old 10 pound tuxedo (Bella, neutered male) was just
diagnosed with diabetes. The vet says his BG is 400, my wife and I
measured it ( first timers... what excitement) at 437 with a one touch
ultra mini glucometer this evening. The cat does not like it, but it was
not that difficult (we used a paw pad prick with the very strong kitty
wrapped in a towel, she held him and I pricked)

Previously we were feeding him dry food that was ~50% carb. After
reading up on feline diabetes we switched to 7% carb (EVO), and are
thinking of switching to raw meat. The plan is to watch the BG ( read
every other day) and, should it start to rise, begin a treatment of
insulin. Given my druthers... I'd rather treat the cat by change of
diet, but am willing to go further if needed

My question is should I just simply begin insulin treatment now? I'm
extrapolating from humans.. my GP tells me he has patients that come in
year after year with BG of 400. From what I've read change of diet can
help. I just do not know how serious 400 is in a cat, and if I have the
time to wait for the change in diet to kick in.

Rest assured, should he not improve, I'll start the course of insulin