if you meaning to say strategies for a good revision then I can tell you to revise all the notes your made for from the different copies and not came for anything new or any new constructed MCQ but goes to solved papers all list down formulas and diagrams and this consolidate on what you already know paying special attention to the chapters of thermodynamics a mechanical wave optics and modern physics in physics, hydrocarbons and carbon and compounds, metallurgy and atomic structure as well as mole concept in chemistry apart from the chapters on reproductive system, cardiovascular system endocrine system, nervous system and biomolecules as well as biotechnology and microbiology in biology which are heavily questioned portions and yes you practice 1 or 2 MCQ people just to time yourself and see how many are getting correct but do not panic over what your preparation is because what has been done already done for the year and last 10 days cannot change anything