Deep breaths ... you'll get there. Patience is key though - no frequent dose changes, etc. This WILL take time. Night (evening) tests serve two functions: 1. many kitties run lower at night for many reasons - less food, less active, etc. ; 2. evening tests can help fill in the BG data gaps when you can't test during the day because you're at work.
Yes, this is possible IF you have a load of data on kitty's responses and you've narrowed down the good dosing range. You aren't there yet. There's a typical pattern we see when working toward better BG regulation:
- owner starts testing and gets crazy numbers that make no sense because kitty is early in treatment or the dosing hasn't been optimal to that point
- owner panics and wants BG regulated ASAP leading to frequent dose changes or too large increments that increase the erratic numbers and leads to big ups and downs
- more careful dosing (consistent dosing, testing at key times, 0.25 u increments when changing) is undertaken and things begin to calm down although BG range is too high
- eventually the BG range improves and nadir values optimize (somewhere in dark green is good)
- owner hones in on the best dose range and can try tweaks to customize dosing to suit the kitty.
These steps take many, many weeks if not many months. Right now you're at the first and second steps and we're trying to get you to the third. We've all been where you are.