3 units is a lot. If you are not particularly attached to this vet, it may not be a bad idea to switch. Some vets are just not well versed in the treatment of feline diabetes. I think they treat them the way they do dogs, and cats are so different.
Novalin is a harsh insulin and is much better suited for dogs. I would ask about a gentler insulin like Lantus or Levemir.
When Katie was first diagnosed, a crackpot "specialist" (not my regular vet) put her on Novalin. After reading here about Lantus and it's advantages (which I am sure you have read too), I very nicely asked him about Lantus and he nastily told me all he used was Novalin and if I didnt like it I could go somewhere else.
And that's exactly what I did.
Katie did go into remission after 1 1/2 years on Lantus and remained in remission for 3 years. Unfortunately 10 months ago she did go out of remission, and is back on insulin now.
BTW, you have done great. Being so new at this whole thing and to get a hypo right off the bat, you did wonderfully. Give yourself a pat on the back. Much better than I would have.
Regarding your other post on diet- you may be one of the lucky ones and get it under control with diet only if you continue to try to switch him to a low carb canned diet. Some cats go into remission once they make the food switch.
I'm sorry I couldnt answer some of your questions, I wasnt sure when it was "safe" concerning testing/timing. So glad Chris showed up to help
