Looking at her spreadsheet, it looks like getting a +2 is kind of a waste of time. She seems to go up and onset of insulin for her seems to occur later than it does in a lot of cats. I would slip the time of that first test after her shot until +3 and, unless her pattern changes, maybe even +4. It’s a good idea to try to catch her nadir around +6/+7. Of course you still will be feeding her the planned snacks.
We often say around here that all data is good data. Your testing has not been in vain. It’s allowing us to see her patterns (onset, nadir, duration, etc.). Having this much data on the days that you are home will really help you to be more confident on the days when you’re working. You can test as much as you want and she will tolerate; I am just suggesting that if you want to give yourself and Snuggles a break sometimes then skip the +2. If you do decide to get a +3 and you find it’s going down significantly from preshot, then you would want to get a +4. Or if you get a +4 test, and you find it is going down significantly, you would want to test at +5. Is this making sense? During this time you will be feeding her he portioned meals anyway.
As to when to feed, it’s kind of up to you. Some people feed every hour, but that can be too much for some people to do. Others will feed at +2 and +4 and +6. Of course if low BG warrants it, then you may have to change plans and feed more frequently. Fortunately, Snuggles is not a “diver.” She seems to like to take things a little more easy and not try to hit nadir in the first two hours! Be happy for that! She’s also not super bouncy at this point. She is doing really well and so are you!