i certainly admire your aspirations, but i think six weeks is too long to study for step 2 CK. If you are taking it early in the fourth year (while M3 clerkships are fresh), you really need just review and do some practice questions. Most of my classmates improved their scores on step 2 and studied much less than they did for step 1. In my experience, step 2 was certainly an easier exam than 1. I only studied for about ten days (was on an off period) and improved my score. Good luck and hope you meet your goals!