This can be done but it would serve you well to get the majority of a year of internship under your belt since the exam is basically all management of a diagnosis which you have to make from each vignette. There is no rush to take this thing, you will have time during intern year or even after (I took mine late into second year). I would take your time off before internship starts and get in all of the relaxation and fun you can fit in. In the end you will have to study MUCH less if you wait until the end of intern year to take this thing, because you will have managed many of the cases yourself. Hope this helps and good luck.