Going to miss my contextual offer

Had an offer from Exeter for neuroscience, only requirement is a B in chemistry. Unfortunately, I only started self-teaching chemistry around xmas time so I am nowhere near a B. I've also been resitting bio and psych, which I think I've done fairly well in. But I'm almost certain, even if I did very well in paper 3 tomorrow, that the most I can get for chem is like a D. What should I do? Already stayed back a year to resit bio and psych so cannot stay again.

If you dont hit your grade this time you could either try clearing for a different uni if Exeter dont let you in or you can try Chem again next year as a private candidate

Had an offer from Exeter for neuroscience, only requirement is a B in chemistry. Unfortunately, I only started self-teaching chemistry around xmas time so I am nowhere near a B. I've also been resitting bio and psych, which I think I've done fairly well in. But I'm almost certain, even if I did very well in paper 3 tomorrow, that the most I can get for chem is like a D. What should I do? Already stayed back a year to resit bio and psych so cannot stay again.

If you miss the offer requirements and and are rejected
1. Rethink where you want to study - see what is available in clearing
2. Rethink what you want to study - see what is available in clearing or take a gap year
3. Consider a course with a foundation year
4. Retake chemistry as a private candidate next year

Don't rush into the first option that you can find, consider carefully what is best for you and take a year out from education if you need to.