We found out our cat, Noah, was diabetic about a month ago after some weight loss. He’s 13 yrs old so didn’t think too much of it. Had sugar tested, it was high, so we did a 2 week food switch to see what effect it had. In two weeks, we got his sugar from around 600 down to 350. 2 weeks later, we started 2 units of insulin twice a day. 2 weeks later, his sugar was back up to over 600. Our vet said to do 4 units twice a day. Not even a week later, I gave the cat his morning injection(I forgot to make sure he ate first) and he instantly began bobbing his head and staying close to the ground. After some research, I figured his sugar got too low. Some corn syrup on the tongue got rid of the head bobbing, so I knew we were on the right track. Shortly after, he started doing it again so I did more syrup to stop it. After each time, he seemed out of it and was almost completely non-responsive. Took him to the emergency vet and they immediately did a sugar test and found he had an insulin overdose and his sugar went down to 28! I forgot to mention, he had a seizure in the car on the way there, and they said he started to have another one when they were getting him hooked up. An overnight stay with a glucose drip got him back to normal. Vet there said to put him back to 2 units per shot, if he doesn’t eat, only give him 1 unit. Sorry for the long post, had to give details. Now to the original post headline, they mentioned testing his sugar at home. Does anyone else do this, and is it difficult to do? I don’t want his sugar getting low like that again. Thank you.