Hello Mohit,

Aap 150+ ki hi kyo soch rahe ho why not 250+ pahle to aap apana goal high level pe set karo aur fir lag jao ji-jaan se. Than lo ki tumhe ye karna hi hai aur usake liye achhe se taiayari karo.Achhi si study material lo aur usake concept ko achhe se padho aur fir us concept pe based questions ko solve karo. Continuity ko banaye rakhana isako break mt hone dena kyonki continuity tumhe bahut help karegi tumhare goal ko achieve karne me.

So, All the best and do your best.

Dear Mohit,

JEE is one of the competitive exam. 
To score good marks in your exam it is very important the you have good hold on P/C/M subjects. You should have your basics strong. Take NCERT help to work on your concepts. It is very important to solve all the exercise given in NCERT book you can also go for NCERT exemplar.
Practice makes lot of difference specially in mathematics. Try to give extra attention to important topics which carries more weight-age in the exam. You can also solve MCQs. Solving complete mock test series is very important make sure you do proper analysis. So, that you can improve your performance. It will help you to know where you stand among other competitors. Try to increase your speed as well.

All the Best for your preparation and exam!!