Hey there,
Don't worry about that now! It's time to relax or go easy on prep so that your mind is well rested before the big day.
Besides, you should remember that it's not only your hit rate that makes up your score, it's also how many questions you get wrong in a row or their relative placement. I actually recall Stacy Koprice saying somewhere that most test takers get even 50% of questions wrong, but that doesn't stop them from getting a good score.
I say that the best way to tackle prep in the last few days is to go for some light exercises and review your error log, particularly concerning questions you got wrong from the OG.
