don't worry about not being able to tell what's going on yet. This is a slow process. As long as you keep getting negative ketones, we'll just keep plodding along.
The protocol suggests 6 or so cycles at a dose, then increasing based upon how low he got in the last 3 days.
I don't think you have to get up every 2 hours during the night. that just pains me to see you did that last night. You must be exhausted. We saw on 9/15 that he spent 7 hrs in blue/yellow numbers, so, in my opinion, if you can test once in the middle of the night, that's plenty. i know we don't want wide open white spaces, but you have to balance it out with you being able to sleep. Last night when you got the 294, that was great to get another test in 2 hrs. But when that was over 300, i'd have said sleep til amps. Once he's started up again after the nadir, he's not very likely to go down again before the next cycle.
My guess is that he may have had some lower BGs (not dangerous low, just lower than he's used to) on thursday when you were at work, then bounced again from it. If that's what happened, then he should clear that bounce either tonight or tomorrow's day cycle. Tomorrow would be 3 days from Thursday, and bounces usually resolve in 3 days or less. I'm mentioning that because it can be helpful when deciding when to test next. If you expect a bounce to clear and you're wishy-washy on when to test next, choose more often at that point.