See this year the eligibility of 75% marks in boards is taken off by NTA. So if you apply this year then you would have eligible for the course. But as you are asking for JEE MAINS & Advanced 2022 then it will depend on the situation and the decision by MHRD about this and the Education Minister will inform accordingly. So you can expect a 50% chance of getting the same rule ahead but it may occur that if the condition of COVID improves next year and if offline exams are conducted then you will not be able to sit for JEE MAINS/Advanced as at that time it may occur that 75% eligibility is again put in place.

So if you have applied for JEE MAINS/Advanced this year then you should prepare good as this year the 75% barrier isn't applicable. You can apply for JEE MAINS 4th session, the application form will be available from 9th August to 11th August 2021.

To know more about JEE MAINS 4th session 2021 visit the link below:

https://engineering.careers360.com/articles/jee-main-exam-dates

To know more about JEE ADVANCED 2021 visit the link below:

https://engineering.careers360.com/exams/jee-advanced

I hope this answer helps. All the very best for your future endeavors!