When it comes to studying, start early and start small. Begin reviewing several days out from the final exam and do only short reviews that are meant to refamiliarize you with material you haven’t seen in a while. This is the studying analogue of skimming a book before you read it, or putting a primer down on a wall you are going to paint before you paint it. It takes time and a somewhat gentle touch to get your brain ready to assimilate and recall all the stuff it will need to.