Maths Paper 3

Maths Paper 1+2, didnt go well, expecting 43/80 in paper 1, and 54/80 in paper 2 bare MINIMUM, I am normally a grade 8 student, since its paper 3 do I just ONLY revise topics that haven't came up to get a grade 9? 1 month prior to gcses we did a past paper in class and i peaked and managed to get 78/80. But as I broke my leg, side effects of the cast brung me down during exams.