Good morning, I don't think I've posted in your condo before...welcome to the group!
You've been doing a good job of gathering data, Moron is looking very good on this dose! I know it can be hard to get up and get another test, Mr Tinkles was very good at dropping low at the time that I really needed sleep! Can you set an alarm when he is heading lowish, and grab a sleep test? I use my cell phone, and have preset alarms that I can just turn on so I don't have to think about setting up a new alarm when I'm half asleep. (I was a testaholic, please don't think you will have to test as much as I did all the time!)
It's possible that he went lower than 99, and this could be the start of a bounce from the green numbers.