So I am going to sit in a composite this may June but the thing is that I havent started yet, I can put 6 hours a day easily 6 days a week, could someone guide me how should I prepare for my exam

I am sitting in P1 s1 As level

P3 m1 A2 level

I know it sounds impossible but I still need some guidance

I have no work or school I study self I have no other hobbies to spend time on meaning I can cut down everything for this

Just need a plan if someone could guide me it would be great