Welcome.

I can see your spreadsheet. I notice on some cycles you don't have a dose amount filled in: 2/10 PM cycle, 2/11 AM & PM cycles, and 2/12 AM cycle. Did Chippy get insulin? If so, can you enter the amount he received? If not, or if you did a fur shot or skipped, then could you please enter that into your cell (ie "FS" for fur shot)? THanks so much!
Testing can be very hard at first. If you haven't seen it already, here is a link on
Hometesting tips and tricks. Good for you for getting a test before each shot, though. That's a great start and so important, so that you know whether or not it is safe to shoot insulin.
Regarding your question, without more tests during the cycle, it's impossible to know for sure how low Chippy might be getting on this dose. Maybe there is some bouncing going on or maybe he needs more insulin. In my opinion, you need more data at this point. Even an extra test or two per cycle would be so helpful. You want to eventually fill in the blanks on your spreadsheet over time, getting tests at different times each cycle (morning and night) is a good place to start.
Keep on reading the stickies at the top of the LLB forum and then ask questions! If you have time, also start looking at other kitties' spreadsheet.
I'm sure others will be along with more information!