What insulin are you using? It depends on the insulin, The best insulin for cats are ProZinc and Lantus they are a 12-hour insulin easy on the cat, unlike some vets that recommend to feed twice a day, that is incorrect a diabetic cat needs to have two main meals a day plus 3-4 small meals or snacks during the day to keep the insulin in check, home testing is very important you want to test before each shot, to avoid hypoglycemia, just like humans with diabetes, they eat several meals during the day for the same reason and at least tests 2-3 times during the day, most members including myself use the ReliOn Premier human monitor and strips, inexpensive and accurate, we mostly base our numbers on human monitors, no need for a Pet monitor a diabetic cat cannot digest carbs, so is important that their diet consist of wet can food or raw between 0-10% carbs, most members feed up to 5% carbs, if you let us where are you can send a food list from you Country as well, we are here for you we have members that update their knowledge on diabetes daily, we can help you with dosing as well and any concern you may have