Hi

No, you don't need to apply again for april/ 3rd and may  / 4th session if you have already applied for all the 4 sessions earlier.

This is because,

One cannot have multiple application for the same session and the application window have been opened  again for April / may session only for those who hadn't applied for it earlier when the application Window was open for February / March session.

So, you don't need to apply again for  april and may session, you just need to download the admit card once it gets released and then appear for it

You can download your admit card following the given below step once it gets released  :-

-) visit jeemain.nta.nic.in

-) click on download admit card

-) now you need to enter your JEE Main 2021 application number and then your date of birth

-) then you will have to enter the security pin which will be there mentioned on the screen and then click on submit button

-)  your admit card will appear and then save it

For detailed information go through our page the link for the same is provided below:-

https://engineering.careers360.com/articles/jee-main-admit-card

Thank you