In Physics give more concentrate on core topics and their formulas revising and solving last year question papers .In chemistry for organic- be perfect in every reactions with their names. physical -it is same as physics read core topics formula revising and solving more problems . Inorganic – please read line to line inorganic and solve questions u have more chance of getting 15 out of 15 correct ans if u revise more inorganic it is like biology
Solve more last year question papers
Revise more