Not sure how to best plan from here (BP FL3)

Feeling a bit confused and looking to get some advice from people who've scored highly.

Took the MCAT last year, got a 508. Bummed especially because I was targeting a 518 range if not 520. Not too surprised though because I wasn't able to do any AAMC practice until like 2 weeks before the exam, and was doing only UWorld for the couple months before that.

AAMC FL1: 502

AAMC FL2: 508

AAMC FL3: 515

Real thing: 508

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Fast forward to now:

BP Diagnostic: 502 (125,125,124,128)

BP FL1: 504 (126,125,126,127)

BP FL2: 508 (127,128,126,127)

BP FL3: 507 (126,126,127,128)

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Testing on 1/28 but haven't yet started AAMC. Was planning to start that on Monday 1/3 since I'm worried about what to do once I finish all of AAMC.

Is a 518-520 possible still? How should I be strategizing? Any tips you guys have or patterns in my score you see based on your experiences? I am using Milesdown Anki and a custom anki of incorrect questions. Have seen all Bio/Chem/and Phys Milesdown cards but am going through Psych/Soch, Orgo and Biochem still.