Tabitha IS doing great!! I see a trial in her future very soon!
We like to see them getting mostly greens before dropping the dose and she's still throwing quite a bit of blue, but it's up to you in the end. She's your cat.
Since on the morning of 2/4, you have the ?, and she stayed a little higher that cycle, that looks like it may have been a furshot but it's something none of us can know for sure. She did stay a little higher, so I'd say it was very possible, so she may just not be quite ready to go totally off
Do you know when she's been fed over the last week or so? If you can add that info to her spreadsheet, it can be helpful. Some people put it in the remarks, and some put an * in the cell if they've been fed in that hour.
Sometimes it can help to feed a snack at about +9...if her pancreas is kicking in, it'll help bring down the Pre-shot numbers
I'm sorry I can't give you all the answers you're looking for. Unfortunately this dance isn't a science and there are no absolute "do this and this will happen" answers.
There is a dose smaller than .1 called "a drop". It's literally one drop of insulin and there are a couple of ways of getting it. The easiest way in my opinion is to push the plunger HARD into the syringe and then insert it into the insulin and just "let go". The vacuum in the syringe will pull up a tiny bit (but it's best to do this a few times first and then squirt it into a paper towel or something to make sure you're getting about the same amount)