Well, it's only natural you wouldn't retain everything with a month off. Hit the books on the stuff you missed and fill in those gaps. Reschedule for ~2-3 weeks from now and you should be fine. I think that you think you pushed yourself way back in the study process, but your scores didn't go down that much. That info is probably still in your LTM; you've just got to retrain yourself with some additional practice coupled with hardcore content review. Use all your resources to the fullest and I see no reason you shouldn't be back to killing it in a few weeks.
You have a God-level GPA so...assuming ECs/LORs are in check, finalizing your app a tad later shouldn't be a huge deal. Are you doing AACOMAS too?
Are you going to submit before taking it? Verification can take a bit, so that might be a consideration if you haven't thought of it already.
P.S. The general trend in practice is NOT always an upward one. You have to take into account your score can fluctuate pretty widely simply because each test can't test every little thing. One practice exam may have a higher ratio of things that can throw you off than another - that's how the real exam is too. However, I do think it's possible your break may have increased your susceptibility to "getting thrown off."