Hello Bhaskar Raj

          Hope you are doing well.If you follow the underlying guidelines then you can crack jee on your own.

*Early start of your preparation 

*concentrate on your class

*self study

*Get familiar with exam pattern and syllabusyllabus

*solving papers increases your confidence level.

*Clear doubts as soon as possible.

*Time management :Time plays crucial role in exam point of view.you must be able to solve most of the questions in given time.

*Online study

*Daily Revision of your topic

If you follow all the steps then you will be able get good percentage in your jee mains.

Hope this helps you.

All the best.

Firstly congratulations for clearing JEE Mains. For cracking JEE Advance you should not pnly go through you NCERTY but alsosolve examples of higher level. So that if you solve difiicult level examplesyour mind will start working towards difficult example. And most important you should try to complete the syllabus as fast as you can. Remember not to take much time in doing only one chapter. All the best for you exam.

Hello!!!

You can definitely crack JEE advanced with self study. All you need is determination . First of all you shall be thorough with the content of 11 and 12th class. Whatever is you weaker section amongst physics, chemistry, and maths you shall practice that section more. Keep targets for everyday. For maths Rd sharma seems to be a good and a challenging book. For physics, hc verma is a good book. And for chemistry you don't need to study much from outside. Mostly things are from 11th and 12th only.  When you are done with every concept then try to solve atleast 10 old question papers of advance. From there you will find solutions to many new questions. 

Good luck