Hlo chiranjib, Solve previous year questions and give as much mock tests as you can. Join some crack course of best coaching institute. Revise all the formula, Important topics , chemistry rxns, short tricks. Don't learn any new chapter now . Only revise the chapter you have done before. Chemistry is the easiest part in jee exam. So prepare it well and most of chemistry questions are rxn and theory basis so strong your theory portion . Revise all the formula of math and physics and also revise short tricks of both. Don't feel nervous and tensed cool your mind and don't take care about results Give your 100% than you will achieve what you want.

just go with the acedamics clearly many of the direct bits can be answerd if good at acedamics mostly jee bits are coverd from ariharant publications so try to spend 4 to 5hours on practicing its a very easy task if you dont feel tensed feel it like a normal exam dont be stressed good luck brother

Dear Chiranjib,

In last weeks of your preparation you should focus on the revision.

If you want you can make your time table according to your comfort. Set your daily and weekly targets. 

Focus on the chapters which holds more weightage in the exam. Solve as many as MCQs for your practice 

Try to overcome your weakness. 

In order to score good marks in your exam you should practice a lot. work on your time management. 

Be determined and self motivated to crack your exam

All the Best!!