If the results go pear-shaped, which hopefully they won’t, I do know of students taking the adult nursing degree apprenticeship route who were accepted with lower grades.
That probably varies between universities though.
You would be employed as a health care support worker part-time and supported to do the degree part-time.
You do have time to improve on the mock results, they are not a definite prediction of grades. Hopefully, you’ll just continue to work hard & get the grades you want!