Second Semester in, already feeling burnt out

Im in an accelerated RN program, and for some reason I just cant get myself to really study and retain information in the last two weeks. I have an exam next week on and I feel like im not prepared at all. Im not sure how to get out of this funk…I really need and want to do well on this exam. Ive tried to stay up later to study to catch up but im just not retaining or motivated. Any advice?