At first, it's common for us to tell you that if the Pre-shot test is under 200 you should stall, DON'T feed and test again in 20-30 minutes. Using that time to post here with a good clear subject line (like "STALLING! NEED HELP!") will usually get somebody's attention.
If the number goes up, we'll usually suggest you go ahead and shoot (depending on how much it went up) but if we do suggest you shoot a lower PS number than you're used to, we have a tradition here that the person who suggested you shoot will remain online and available to watch for your updates for as long as necessary to make sure both you and kitty are OK. We do not leave you alone!!
As you gain more experience and data, that "stall point" can start to come down. Some of us with enough experience, data and a good understanding of how our insulin works in our cats, will shoot anything over 50 (on a human meter)
If you never shoot under 200, you're chances of getting him into remission are drastically reduced. Vet's don't always understand those of us that are willing to "do the work" and test our cats enough to make sure they're safe so they tend to let cats stay "just a little bit sick" rather than risk a hypoglycemic crisis (but as long as you're able to test and have plenty of supplies, YOU are in control of his blood glucose)
It will really help if you'll go ahead and fill out your "Signature" as soon as possible. That way we don't have to keep asking the same questions over and over (which is important in case of an emergency). If you want some help with the spreadsheet, feel free to send me a private message by clicking on my name and choosing "start a conversation". It only takes me about a minute to set up once I have some information