Hello,

it is quite impossible to say as no one knows if the previous year pattern will be followed or not. it would be better if you solve last 5-6 year paper. There will be some questions which will keep repeating.  you can prepare them well.

for mathematics, you have to give equal importance to all the chapters. if you find one or two difficult then leave it for some time and try again.

for physics, focus more on 12th physics as it has more numerical chapters. solve numericals available in books too.

chemistry is mostly theory. You have to deal with numbers in organic ad equations in inorganic. Have to remember element table in physical. it is bit lengthy. take time and understand what ever portion you study.

whatever you study, do it like a learning process so that you don't get confused later.

Hope it helps!