Hi dhanushu, 

You are going to prepare for jee mains to score 250+ marks that a really great goal. 

You should focus on chemistry,  maths and most importantly physics. 

Do remember to solve numericals on daily basis from different books . Try to complete whole syllabut up to October. And study  by thinking that your whole life and career will depend on only this one year of study so give  as more as possible time to your studies. 

For one year  try to stay away from social media. 

For any other information you can ask us. 

Hello Dhanush!!

For preparation of JEE main with good marks and rank requires lots of effort.here some of the guidelines to be followed :

• Make your time table and follow it throughout the year.
• Refer to only standard books advised by your teacher and try to solve more numeticals.
• Give your every test to evaluate yourself.
• Don't be demotivated and never miss your class.

Good luck !!