I would suggest you complete your NCERTs first and try to do more number of MCQs and apart from that you are advised to focus on below topics properly -

Physics -
Fluid Mechanics.
Electricity and Magnetism.
Optics.
Nuclear Physics.
Thermodynamics.
Oscillations and Waves.
Photoelectric Effect

Chemistry -
Organic Chemistry.
Chemical bonding.
Acid and Bases
p Block Elements.
Chemical equilibrium.
Chemical kinetics.

Biology -
Princilples of Inheritance and variations.
Cell The Unit of LIfe.
Biological Classification.
Morphology of Flowering Plants.
Sexual Reproduction in Flowering Plants.
Basis of Biotechnology, and anatomy.
Genetic
Ecology and Environment


Good Luck!!!