I can add some more data points for the thread... I did nothing but practice questions (UWorld, Kaplan) and Anki/Zanki cards for 7 weeks. Reading textbooks does nothing for me. I also made flashcards for every single missed UWorld question and some flashcards for ones that had info I didn't know on the first pass. I have no real good explanation for the huge jump from baseline to NBME 13 though. I did well in M1/M2 classes, so maybe most of that info came back

Post-exam, I counted at least 12 I knew I missed and maybe 6-8 more that I likely missed. I felt cautiously optimistic but not super confident either.
CBSE (baseline; promptly freaked out) = 196
UWSA 1st Pass percent correct = 79%
NBME 13 (4 wks out) = 252
NBME 15 (3 wks out) = 252
NBME 19 (2 wks out) = 248
NBME 17 (1 wk out) = 261
UWSA1 (1 wk out) = 269
NBME 18 (5 days) = 252
UWSA 2 (2 days) = 260
Free 120 (2 days) = 89%
Real Deal = 257