You don't need permission from the vet to start home testing, blood sugars are often higher at the vet and often drop with a switch to a low carbohydrate wet food. So you do need to know what they are doing at home to keep your kitty safe. I no longer have curves done at the vet as my home readings are much more reliable. They have the link to my spreadsheet so they can check her numbers periodically. You don't need an expensive pet meter either, a human one does just as well, and you can use a spreadsheet as we do to keep track of the readings. I am using the same insulin as you but can't advise on the meter as I am not in the US, when you do go to buy one make sure you get some urine testing strips to check for ketones as well. Testing can be done from the ear or the paw pads and there is a lot of information in the stickys in each forum. The routine is test, feed, shoot. Any questions just ask and someone will be able to answer.