Hello Aspirant,

Unfortunately not because at the time of JOSAA registration, JOSAA automatically takes your data from JEE-Main and JEE-Advance so your category cannot be changed at that point of time but at this point of time you can wait till the attempt of May 2021 which is the last attempt of JEE-Main 2021. What I want to suggest you is, If you don't have your reserved category certificate for EWS category right now then you can submit the undertaking which declares that you will submit the original and valid caste certificate later on at the time of admission. You can download the undertaking from the official portal of NTA, for which link is also given below :-

https://jeemain.nta.nic.in/webinfo2021/File/GetFile?FileId=5&LangId=P

When you visit on the above link you will find a PDF and on page no.9 there is undertaking format which you have to download and after filling it you have to upload it on the place of category certificate in the JEE-Main 2021 Application form.

But if by that time you will not upload the certificate then you will be considered under General category and then the seat will be allotted to you under General/Unreserved category.

For complete details about JOSAA counselling kindly check out the link given below :-

https://engineering.careers360.com/articles/josaa

Some insights of JEE-Main 2021 :-

> To qualify for JEE Mains, there is no minimum aggregate percentage criteria and also if you want to take admission into NITs, IIITs or CFTIs then you should pass in your class 12th. Because as per the latest announcement made by our Hon'ble Education minister Mr.Ramesh Pokhariyal Nishank, the 75% criteria has been removed for upcoming year 2021-22.

> Also from this year according to New Education Policy the JEE-Main examination will be conducted in English, Hindi and other regional languages such as Bengali, Gujarati, Assamese, Kannada, Marathi, Punjabi, Tamil, Telugu, Urdu, Odia and Malayalam.

> In JEE-Main 2021 there will be total 90 question out of which you have to attempt only 75 (25 from each section) and there will be two sections for each subject, Section-A will be of Multiple-Choice Questions (MCQs)(20 compulsory questions) and Section-B will contain Questions whose answers are to be filled in as a numerical value (10 numerical based questions out of which only 5 are compulsory to be attempted).

> In Section B, candidates have to attempt any five questions out of 10. There will be no negative marking for Section B.

> All question will be of 4 marks and in MCQs there will be negative marking of (-1) on incorrect attempt.

This year JEE-Main is being conducted with slight changes in it's pattern and it's conduction and you can check out all the changes from the link given below :-

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

I hope this information helps you.

Good Luck!!