Hi, Karen - Welcome to the "club" that none of us ever wanted to join.

And congratulations on getting up & running on BG testing so quickly, as that's half the battle right there.
One unit is usually a good starting point. However, he wasn't horribly high at the vets, so 0.5 units might be an option, too.
I agree with BJ about this, and Mogs had a good point, too, re: starting low on the insulin dose, and then adjusting upward in small increments (between 0.25-0.5U), based on what you're seeing in the AMPS/PMPS + nadir BG tests. I know we're all looking forward to seeing your spreadsheet tomorrow.

You'll find having that SS up & running to be a big help: As the blood glucose test results you get accumulate in Micah's SS, that data will make it easy to see
how his body is processing the ProZinc.
I did change his diet from mostly Nutro pate to Purina One Smartblends Pate literally the night before I started his insulin. However I think he had one normal poop after starting the food and before the insulin. I was feeding 2 cans a day. Now I'm giving him 3 cans with 1 can split in half as in between treats/snacks.
The diet change could definitely have caused Micah's digestive upset, but I'd imagine that will settle back down over the next few days ... please keep us posted on the quality of his pooping, ok? (Just for future reference: When introducing any new food to his diet, it's a good idea to transition over a period of several days: i.e., 75% old food/25% new for a couple of days; then 50/50 for a couple of days; then 25% old/75% new for a couple more days; then 100% the new food.)
The other thing that
could possibly factor into his tummy troubles is that he's suddenly getting another full can of food per day: that's an increase in daily rations of more than 30%. It helps to think of your diabetic kitty's food as "medicine," too
, making sure you're feeding the correct amount to maintain a healthy weight (
slender is better for a diabetic cat, but by that I don't mean "bony"). To give you an idea: My cat's is rather large & long for a female - she's about 10.5 lbs., and we maintain that weight on about 2.33 cans of Fancy Feast turkey/giblets per day (3 oz/can). Every cat's metabolism is a little different, of course, so it's not a bad idea - especially when you're first starting with the insulin - to be weighing Micah every day for a while. Here's a handy chart to help you assess his current condition:
body condition chart
It helped me a lot to to put a cat's weight in perspective this way: An extra
single pound on a 10-lb. cat is like an extra
TEN pounds on a 100-lb. human! I think that sometimes we tend to underestimate how "a little" extra weight can affect how a cat's body
processes the insulin. Whether Micah's need is to gain, to lose, or to maintain his current weight is something you'll need to determine; the only caution I have to offer here is that any change you decide is needed (if any) should be done
gradually. This is especially true when weight
loss is required: It's best that it happens slowly because a kitty losing weight can mean a significant difference in the need for insulin (usually less). Yet one
more good reason for keeping close tabs on kitty's blood glucose via in-home testing.
I hope some of what I've written here is useful to you, Karen. I'll look forward to seeing how Micah is doing tomorrow morning!
