hi tariq anwaar,

 i think you should reapply for jee mains april session,the application will be available from 8 feb to march 7 2019.so you can  correct your mistake this time.if you do any mistake this time also,there is a option.the correction window for april will be available from 11 to 15th march 2019.

all the best!

I Hope this information will be useful to you.

if you need additional information,let us know to help you.

Thank you!!!:)