A levels Stress

Guyss, plss suggest me what to do. I have so much content to revise for my sciences (Phy, Chem, Bio). I literally am two weeks away from the actual exam and I haven't done yearlies. I am revising through topicals but I need to do yearlies. More importantly, what do I do for bio, how do I go about covering the content. Do I revise content from scratch or do I just do past papers? For Physics, I have to practice questions to get better at them but I haven't done topicals for radioactivity and circuits completely. Plus, I am confused about connected bodies in dynamics (pulleys etc.) , do I do stuff I am unsure about or do yearlies. I am do confused about maths. For some reason, I cannot seem to understand the trick being used to answer questions. How can I possibly improve that? Some papers are harder than others. I want harder questions to practice effectively. Lastly, I am so no confident with organic. I haven't memorise all the mechanisms and reactions really well. So do I do that first and them solve questions on the same chapter or do I go directly towards yearly papers. I also am confused about Equilibria and I am taking Cambridge A levels. How can I master that chapter. Someone in a similar position, plss plss reach out. It would be a huge favour. I am absolutely directionless.