Hi

If you are starting from scratch and want to prepare for JEE examination in just 6 months then it is going to be quite difficult as the syllabus of JEE mains is quite broad and it takes time to cover them with clear concepts , but don't worry if you remain honest to work your preparation and dedicated then you can definitely prepare well.

As you want to prepare in just 6 months so you should focus more on important chapter .Some of the  important topics or chapters based on their weightage in past year JEE examination is provided below subject wise, you should stress more on these

PHYSICS

Modern Physics -20 marks

Heat and Thermodynamics-12 marks

Optics - 12 marks

Current Electricity- 12 marks

Electrostatics- 12 marks

Magnetics- 8 marks

CHEMISTRY

Transition Elements and Coordination Chemistry- 12 marks

Periodic table and Representative Elements- 12 marks

Thermodynamics And Gaseous State- 8 marks

Atomic Structure- 8 marks

Chemical Bonding - 8 marks

Chemical And Ionic Equilibrium - 8 marks

Solid State And Surface Chemistry - 8 marks

Nuclear Chemistry And Environment - 8 marks

MATHEMATICS

Coordinate Geometry-20 marks

Limits, Continuity and Differentiability-12 marks

Integral Calculus:- 12 marks

Complex numbers and Quadratic Equation :- 8 marks

Matrices and Determinants:- 8 marks

Statistics and Probability:- 8 marks

Three Dimensional Geometry:- 8 marks

Vector Algebra:- 8 marks

Practice questions after finishing each chapter you should practice numericals and mcqs

You should practise at least 80 to100 numericals and mcqs in Each chapter to master concepts so that you can solve numericals and MCQs easily

Revise your concepts, important formulas etc at regular intervals, like once in a week or 15 days .

Make routine or timetable :- you can make a routine as well and try to give at least 8 hours or more to study.

Solve previous year questions of JEE

once you are done with the complete neet syllabus go through mock test papers of JEE

Thank you