I think i've done bad on one of my a levels. I've likely done quite well on the other two, I would guess I'm probably going to get an A/B in those two subjects. However, I don't believe I've done well on one of my other subjects and I've likely failed it or got a low grade. I want to discard the A level and do a new A level next year in a subject I'm better at. Hypothetically, I would be taking this subject while in a job and I would be doing the subject from home. Is this possible?