I did English Lit, the biggest thing i'd say is make sure you know the books front to back properly. Make sure your notes are organised because by the time you reach year 13 all the new content will be bombarded to you and you'll struggle finding your notes from year 12 (This happened to me sadly I even lost some stuff). Please make sure you're on top of everything, don't leave stuff to the last minute it's not easy plus you're doing 4 A levels.