Is it possible to score 90+ in Physics 9702 Paper-4

My AS results are horrendous. I still haven't seen my component marks but I think I got around 77/130 in physics (c) grade. So is it possible to get A if I can score 85+ in paper -4 and 25+ in paper-5 which sums up to 187+/260 in A2 (according to 2026 GT A starts from 177/260).

My teachers are saying the highest mark most students get is 85 but that would only increase 1 grade up. Is that true?? Please I don't wanna go for retake and I really need an A in physics I'm genuinely willing to put 100% effort and study my ass off. I know I have the potential I just slacked off in AS ( I had all A and A* is olvls)