RE tests, I thought just +3. +6, +9 unless there was a reason to do it more?
Is there a particular schedule I should follow?
I think that's a great place to start - technically, the TR requirement is preshots + one other test per cycle - with, of course, more tests during active cycles (and where kitty is in new numbers). If you have flexibility in your schedule, I would try to move your tests around - think of your SS as a puzzle and you try to fill in all of the hours (over a few days of course

) - this will help paint a picture of Jill throughout the cycle ( cycles can vary by day, moon phase, weather, etc.

). So if today, you get +3/+6/+9, maybe tomorrow try +2/+5/+7, another day try +1/+4/+8, etc...of course remembering that if Jill is in lower numbers, you'll need to test more often.
FWIW, I personally don't think Jill went lower before +3 (on days where you've gotten a +2 and then a +3, Jill was lower at +3) but perhaps if you had tested her earlier, you could have fed her a small snack. Remember, kitties bounce from numbers that are new to them as well as sharp drops (I'd call that a big drop from AMPS to +3 so you could have slowed the drop with some food and thus reduced any potential bounce). I personally fed Jax as PS/+2/+4/+6 in the AM and PM cycles but every cat is different and you'll need to find what works for you and Jill (I used an auto feeder both cycles

). The general idea is to feed majority of food by nadir to maximize insulin duration - there's lots of info in the
Using Food to Manipulate the Curve post (maybe bookmark for later

)
Just my two cents - you need to do what works for your schedule
Just tested again: 97
Gave a little snack
Hurray, nice surf

FWIW, I kept track of the food and amounts in my remarks; this helped me and others figure out how Jax responded to food.