Hello,

Till now the postponed JEE Mains session for April and May is not declare. But NTA said that before 15days the examination date will announce. And JEE advanced previous date 3rd of July 2021, but the reschedule date is not declare till now. May be they will declare soon. So wait and study well.  May be examination will held on July last week of 2021 or August first week of 2021.

All the best.