A puzzlement:
With those nadirs, I think the fast track might be an option to use. That lets you do increases every 4 cycles when the nadirs are pretty high as the recent ones have been.
Except...
The other thing I see, is that as you've increased, so have the overall levels. Yes, it could be some new dose wonkiness. Or, maybe, since Levemir can take a bit longer to stabilize, he needs to go longer, not shorter between dose changes. When you were using 1.5 units, you got a green...and you haven't had 1 since then.
So it'll be up to you if you want to try dropping back down to 1.5 or if you want to follow the fast track option.
I know some of the Lantus/Levemir folks here can give you more detailed feedback as they have more extensive experience with depot insulins than I have.