Hello.

The application form for JEE (Mains) 2021 May Session will release on the first week of May 2021. The examination will take place from 24th May to 28th May 2021. JEE (Mains) is being conducted in 4 sessions this year (February, March, April, May). Application forms for the April session is expected to be released by the end of March 2021.

For more information: https://engineering.careers360.com/articles/jee-main-application-form

I hope this helps