University of Birmingham psychology course and access to Birmingham

I’m a year 13 student, I’ve applied to the university of Birmingham to do a psychology undergraduate degree and got an offer. I also have done the access to Birmingham scheme which has reduced my grades to ABB. I’m worried I may get AAC as I’m not too confident in biology. Has anyone been in a similar situation and still gotten accepted? I’m not sure if I’ll get in or not because my grades have already been reduced because of the scheme.

Although I understand it depends on how many people have applied to the same course.