My cat Delgado who has had hypothyroid twice in the past now has diabetes. I didn't realize weak back legs and the frequent urination and thirst were the signs. We thought he possibly had the thyroid issue again. Got insulin and started him out with 2 units yesterday...amazingly he seemed a little happier already and more alert. Today he refused to eat, threw up twice and has muscle twitches. I ran to the vet with him and his blood levels had gone down from 500 to 190...but I had given him the shot a few hours before. Still, my vet said he was responding very fast and well. Tomorrow I try to get him to eat his different food which is basically fancy feast classic and royal canin glyco. Not too big a change but he is obsessed with grilled cans and is freaking out he is not getting them now and is only fed twice a day. He never liked dry food and he has no teeth so that part is not an issue. Eating only twice a day is...and finding a food he likes as much. He goes down to 1 unit tomorrow too. Del is very special...I brought him to NYC all the way from Mexico where I found him starving in the bushes. Hoping the lower dose is better for him and he adjusts to the new food schedule. Had a minor panic today when I saw him twitching and then throwing up and crying.