Me too, same subject. I did last years papers as mocks and got a high A* on both paper 1 and 2 but I'm PRAYING I get an A in the real ones. I already know at least 3 things I messed up big time for a pretty significant mark loss.
You're definitely not alone, for today I am focusing on subjects other than psych which helps to forget about it a bit. Almost everyone I have spoken to has left paper 3 revision until now so this final paper is a great chance to boost you as much as possible. Wish you the best of luck