Wow, that's a mega-drop, and I think you pulled that dose back a hair already right? I'd try pulling it back a bit more, maybe 2.2 even on the higher PSs, and probably a lower dose than you would be planning on lower PSs. I'm hoping you'll be surprised and still get a good nadir. I'm guessing you are worried about losing the good ground you've made, and I would be too. I think there's room for more of a decrease though and still get good #s. Even if you got something like a yellow nadir on a lower dose, hopefully that would also prevent any new bounce and the next PS won't be so high, and then you can bring him down gradually from there. If he goes back to high #s you can always raise the dose again, so nothing to lose IMO with trying even slightly lower doses.