Hi, Oliver is a 13-year old male cat diagnosed on 9/19 with feline diabetes. He has always been large/overweight, around 18-20lbs. Prior to diagnosis he had started drinking a ton, was ravenously hungry, and urinating 5 times a day. He had also become pretty lethargic, dropped weight to 17.25lbs, and had become reluctant to jump up as he used to. These were the blood/urine results from the vet: Glucose 28.4 mmol/l = 511.7169 mg/dl <-- Had to convert this Fructosamine a669 The vet prescribed 3 units of lantus, twice daily, which I started on Saturday night... This was frightening because by the next day Oliver had stopped eating much (maybe 1/10 of previous intake), and became very lethargic. I gave him only 1 unit for the next dose and he was more active by the end of the day, but have not continued regularly with the insulin since he is not eating full meals nor retuning to normal activity levels... I gave .5 units last night after feeding. Proper energy level is hard to guage because he was becoming very lethargic even before diagnosis. Yesterday I switched him to fancy feast wet food (he was previously a dry-food addict), and he seems to be eating a bit more... I got him to eat 2.5 (85g) cans yesterday, but at his weight, this is not quite a full meal as I understand it? He ate most of one can this morning. I spoke to the vet on the phone and they were not helpful, telling me to give 2 units instead of 3... That seems like way too much if he is not eating much and lethargic. I want to avoid taking him back to the vet as the stress is not good for Oliver, plus I don't entirely trust the staff. What do you all recommend as a course of action? Should I get him to eat regularly before any more insulin? I would like to home-test his glucose levels before giving more insulin, but I live in Canada so Walmart does not have the ReliOn brand... Any suggestions for Canadian glucose monitors? Accu-Chek and OneTouch are available at the local drug store... Thank you in advance - I have already learned a lot from reading other posts!