English lit coursework

Is it possible to retake your a level coursework but not the whole exam? I submitted my English lit coursework months ago and have massively improved my writing skills since then, and reading it back I think it sounds awful. I don’t want this to drag my entire grade down since I really need to get an A, but I also don’t want to have to retake the entire exams if it drags me down to a B. I can’t find anything about this online, so any advice would be really helpful. Thank you!!