Hi Julie and extra sweet Peyton and welcome to the FDMB! You're in the best place you never wanted to be!
First, the W/D is a high carb, expensive food, and even if your cat likes it, most cats get tired of it quickly so I'd recommend you take it back, get your money back (it's guaranteed) and go straight to WalMart (or wherever you want to buy cat food) for some
Low Carb canned foods. It's important to feed less than 10% carbs to our diabetic kitties or it's like dumping gasoline on a fire to put it out...it just doesn't work! Depending on how bad Peyton's kidneys are, you might also want to look for foods that are lower in phosphorus. (under 250)
Next, we highly recommend learning to home test. You wouldn't give insulin to a child without knowing what their blood glucose was first, and it's the same with our cats! Again, WalMart is your friend! There's no need to buy an expensive "pet only" meter. Most of us use human glucometers, and WalMart's "Relion" brand are some of the best. Their Confirm and Micro take the tiniest blood sample, and the strips are reasonable as well as always available. You don't want to run out of strips at 3am when your cat is dropping too low, and being able to run to WalMart if necessary is really helpful!
There are really only 3 insulins that work well in cats. Lantus, Levemir and ProZinc. The first 2 require a prescription from your vet since they're human insulins, and ProZinc is only available at your vet's office. Cats have a very fast metabolism, and the Humulin insulin just don't last long enough in their bodies. You might want to ask your vet about switching to one of these others.
Here's our "getting started shopping list" that has the things you'll need:
1. Meter ie Walmart Relion Confirm or Micro.
2. Matching strips
3. Lancets - little sticks to poke the ear to get blood . new members usually start with a larger gauge lancet such as 28g or 29g until the ear learns to bleed. Optional - lancing tool.
4. Cotton balls to stem the blood
5. Neosporin or Polysporin ointment with pain relief to heal the wound
6. Mini flashlight (optional) - useful to help see the ear veins in dark cats, and to press against
7. Ketone urine test strips ie ketodiastix - Important to check ketones when blood is high
8. Sharps container - to dispose of waste syringes and lancets.
9. Treats for the cat - like freeze dried chicken
10. Karo syrup/corn syrup or honey if you dont have it at home - for hypo emergencies to bring blood sugar up fast
11. A couple of cans of fancy feast gravy lovers or other high carb gravy food- for hypo emergencies to bring blood sugar up fast
Let us know how we can help you, and ask all the questions you can think of! The people here are wonderful about sharing their time and knowledge and want to see you successful in treating Peyton!