I'm actually leaning towards that. Nan & Amber said you had experience using a fact-acting insulin. I was wondering if you had any advice, mainly concerning his feeding and timing? When we first started, we would put his bowl of food down and give him his shot all in one go. That's what our vet told us to do with ProZinc and we were never told to change. Lately, after being here and hearing that I should be waiting at least 30 minutes due to Novolin N being fast acting, that's what I've been doing, but not from the time he is done eating. He and his brothers take about 20 minutes to finish their food, especially because I'm constantly moving one cat or another back to his bowl. (We don't have the options to put them in separate rooms.) Now, I check his blood glucose level at 9:30 AM/PM then put their food down. At 10:00 AM/PM I give him his shot (if he gets one). He doesn't seem to be spiking or seriously dropping, but is this okay?