HI Gopal!! You can definitely prepare for jee mains without coaching, just follow some of the tips:-

• For physics and chemistry,focus more on the theory rather than solving questions blatantly.
• for maths, it is just the opposite, more and more practise will make you comfortable with different types of questions.
• make sure you check your accuracy, strengths and weaknesses via mock tests
• always focus on solving correct rather than solving more and more questions
• never ever feel panicked when you are unable to solve 3-4 questions in a row.
• your strongest subject should be the best, but your weakest subject should never ever be worst,always keep this in mind.

Have a nice day and best of luck for preparations!! 

Hello Gopal

Only few days are left for the JEE Main exam and it is practically not possible to complete the whole syllabus of JEE Mains till the April exam. You can practice mock tests and previous year question papers. It will help you to know about the exam pattern and difficulty level of the exam.

You must work smartly to secure a good percentile in the exam.
Use the JEE Main Rank Booster for preparation-

https://www.entrance360.com/jee-main-rank-booster/

Good Luck!

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Hi Gopal 

You can definitely crack IIT without coaching.In starting you face some problems.It seem to be difficult but it is not If you have the dedication to crack . Firstly start with basic level books 

For Mathematics - Rd Sharma Objective Mathematics

For physics -Hc Verma it is very good .This books helps you to strong your concepts

For Chemistry -1 organic chemistry cengage organic chemistry

For Inorganic chemistry- do ncert 

For physical chemistry O.P. tandon 

After this you can do previous year questions

For this you can use career 360 ebooks linhere is the link 

https://www.careers360.com/all-ebooks

There are lot of free sources available which is very useful . Like There is YouTube channel name MATH ON GO which will provide free online coaching to students . If u not take any coaching classes then I would suggest you to take test series of any coaching classes which will give you an idea where will you stand how much you prepare 

All the best If this helps you Give your feedback