I have four days until my test and my quant score has been declining, my verbal is generally strong although last night's practice test was horrible in both areas. I've gotten a 670/680 on
MGMAT, and 650/610

on MBAPrep. How much does the logarithm for MBAPrep tests mirror the GMAT? The test I got 610 on I got considerably fewer questions wrong, and I got more correct back to back which would make me think they'd give me harder questions...
Anyway, should I try to find more quant questions to practice on (I've done everything in the OG and OG QR) or should I keep taking
MGMAT tests (the only tests left that I have access to)?
I really just want a 670/680, so please advise with that goal in mind.