review notes, take a gmat prep test, review mistakes and errors, that's it! don't worry too much. it's just a test! good luck and tell us how you did! 8)

if you've been reaching your target score on practice CATs (and therefore know that you've got your weakness covered to a satisfactory degree) I would just review a few questions from either OG or take a the quant or verbal section of Gmatprep everyday (cept for the day just before) to keep your mind sharp and thinking in a GMAT-like way

If you aren't at your target score range yet... then you have lots work to do - find your areas of weakness by recording what results of practice problems/etc and analyzing them, then focus on those specific areas and learn the core concepts behind them, etc.

Good luck

There's a similar thread going here:
https://www.beatthegmat.com/2-more-days- ... html#51685

You may want to check it out; I posted my thoughts there as well.

Best wishes,

Tatiana