Hey,
Surely you are eligible for JEE advanced 2021 as the cutoff for other backward classes this year is 68.0234447. And you can fill the form when the process will start.
And about the preparation you still have some time in your hands make a strategy and follow it strictly. Don't waste your time in thinking that you are not prepared for exam.
You confirm the link for the cutoff of JEE main 2021:

https://www.google.com/amp/s/engineering.careers360.com/articles/jee-main-cutoff/amp

You can also use to college predictor tool to know about the colleges that you can get with this percentile.

https://engineering.careers360.com/jee-main-college-predictor?utm_source=qna&utm_medium=jee_cp

Hello Sir/Mam,

As the cut-offs are released along with the JEE-Main 2021 result so now it is clear that at what percentile the candidate is eligible for JEE-Advance 2021. As per the NTA, qualifying cut-offs goes like :-

==>> Common Rank List (CRL) - 87.8992241-100.0000000 Percentile

==>> GEN-EWS - 66.2214845-87.8950071 Percentile

==>> Other Backward Classes (OBC-NCL) - 68.0234447-87.8950071 Percentile

==>> Scheduled Caste (SC) - 46.8825338-87.8950071 Percentile

==>> Scheduled Tribe (ST) - 34.6728999 87.8474721 Percentile

==>> PwD - 0.0096375-87.8273359 Percentile

So with 72.3 percentile you are qualified for JEE-Advance 2021 and you will be able to register for JEE-Advance 2021 once the applications will start and it will start by this evening.

You can check out more details about JEE-Main 2021 qualifying cut-offs from the link given below :-

https://engineering.careers360.com/articles/jee-main-cutoff

To have a list of all those colleges which you can get based upon your marks, category, and state you can use JEE-Main College Predictor:-

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

I hope this information helps you.

Good Luck!!

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