I am no medical professional...but I would say that your specialist team are doing the right thing...and that nurse who told you to run around was, erm, not!
I suspect that you will be seeing them quite a bit to sort out your levels...which is, I think pretty normal. Hope it hoes well. They would not drop you straight to normal levels immediately, as, a change from running high to running at normal ish levels can harm your eyes, so a slow reduction sound like a great plan to me.
Best of luck.
Re the meters, I have noticed a variation, but nothing as big as 7 units! :shock: