Chem 51B Bess curve possibility

I am really nervous for the Bess final because I did not do well at all for the past midterms because I got sick with covid and then sick with the cold during the quarter and I was not able to catch up. I am sitting at an F right now and I am almost at 100% for the Hw and Quizzes and I am not sure if I should start preparing for taking it during the summer or what else because I am studying as much as I can right now but I am just unsure.