It's really not that bad, as a DS you are focused on quite a few other things to get your requirements and graduate. With that being said, once you graduate and finish I would start reviewing the basics again. OMFS secrets isn't a bad review book to look stuff up. I would buy and memorize the Maxwell book (small pocket book) as much as you can (it contains Glasgow coma score, dermatomes, mini mental state exam, eye test, etc). Nevilles pathology book is great for pathology review. You definitely need to start gearing up and you'll realize quickly that intern year is crazy busy but you must read. I am cranking through Petersons now but read a lot of Fonseca trauma and regular Fonseca my intern year and it was very helpful.