Hello Shreya,

Dont take unnecessary pressure, keep calm and cool with the next few months, no exam is bigger than one's attitude towards it.

Would suggest you to do brush up sample papers in the next 30 days.

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.

A cool and calm mind with help you get through the exam more easily.

Dont worry about the number of seats, just concentrate on your preparation.

Hope this helps.

All the best.

Thank You.