Hello Avni,

Focus on important topics which contain more weightage in the examination like in Physics concentrate on Electrostatics, Optics, Properties of Bulk matters, Semiconductors, Mechanics.

Chemistry: Coordination Compounds, Chemical Bonding, GOC, Equilibrium and Thermodynamics, P Block

Biology: Human Physiology, Reproduction, Ecology, Genetics, Plant Physiology.

Concentrate on these topics more but don't ignore the other topics.

Solve more previous year papers.

Brush up all the formulas everyday and go through NCERT everyday.

Practice as much as you can.

Hope this helps.

All the best.

Thank You.