I was very data driven when managing Gabby's diabetes. I understand where you're coming from! (Look at her spreadsheet and you'll see what I mean!!)
There are a couple of points for discussion. If you are routinely seeing numbers that you're uncomfortable shooting, one thought is to lower the overall dose. At least based on when you started putting numbers on Artemis' spreadsheet, 5.0u is a big dose. We encourage members to start at a more conservative dose unless the dose has been systematically raised and providing there aren't other considerations such as a history of diabetic ketoacidosis (DKA).
Generally, if you get a lower number than expected, don't feed your cat. You would want to stall and re-test in 15 - 20 min to see if numbers are rising. If stalling is problematic, give some thought to altering your shot time if that's at all possible. I ended up shooting at 5:00. Gabby was notorious for early, fast drops in her numbers. Shooting early meant I could get tests in before I left for work and could manage her numbers with high carb food if necessary. (I was also using Lantus which in some ways is more forgiving than Vetsulin.)
When you stall, you have to balance how long to hold off on shooting vs being off schedule. I would not have been able to manage being even an hour off schedule. If stalling isn't an option, reducing the dose for that cycle may be an alternative. Again, it's a balancing act. When Gabby was diving, I may have stalled 15 min but with Lantus, the "no shot" number is much lower and I had a good deal of flexibility (e.g., I could run home at lunch to check on her). I also knew she was food motivated and I had a timed feeder and if I was nervous about her numbers, would leave higher carb food in the feeder.
Basically, with low pre-shot numbers, you have 3 options:
- Don't feed and stall in 15 - 20 min increments, re-test, and when numbers are on the way up, shoot.
- Reduce the dose/give a token dose
- Skip the shot
All of this plays havoc with your nervous system until you have a better sense of how Artemis is responding to insulin. It will never be fully predictable but you will have a better idea of what your cat does. There is a common saying here, "every cat is different" (ECID). How Artemis reacts to insulin may be very different than another cat that's prescribed Vetsulin.