Practicing Practicing Practicing
I agree with FSUSTC, practicing questions during these two weeks will gear you up for the exam day.
Reading the books again and again won't do that good and you'll never memorize the materials no matter how many times you repeat them, it's the questions that shape you up for the exam.
Also, it might be a good idea to do some mock exams like the NBME or the USMLE World Self Assessment exams, as this will train your durability and gives you an idea about your predicted CK score.
Don't forget to come back here and tell how you did in the exam
Wishing you all the luck