Thanks everyone. She is on Caninsulin, and is getting 1 unit 2x a day to start with. She's on Hills m/d because the vet wants her weight to come down to about 12 pounds (she's 14 right now).

I fed her last night and she loved the new food. I left out some of her old food too because I didn't want to shock her system, but then around 2:30am she threw up all her dinner I didn't offer her any more food because I wasn't sure what to do, but I stayed up for over an hour, just watching to see if she had a low blood sugar. She fell asleep long before me.

This morning she wanted her breakfast, but right after eating went to lay down and sleep, and I wondered if it was upsetting her tummy a bit. This food is higher in protein than what she's used to, and so I'm wondering if it's just a bit of an ajustment we need to make. The vet called this morning just to check in and I told him what happened, and asked if I could give her Pepcid A/C to try and settle her stomach and he said that would be fine. So, if she throws up her breakfast I will go to the drug store tonight and get her some Pepcid and see if that helps. Nutmeg, by the way, loved the new food and had no problems with it. The vet said that Nutmeg should also get her weight down because we don't want her to develop any health issues, so they are both on kitty diets right now. Once things are stable and they are at an appropriate weight, they will likely be switched to a senior food that is meant to maintain kidney health, but we will cross that bridge when we come to it.

She's had 2 shots so far and has been so good. She didn't even flinch or whimper. She just sat there and let me do it and then got down and gave herself a bath