Hi BIKAS,

• Go to the JEE Main 2018 application correction portal and log in using following details:
  JEE Main Application Number
  Password
  Security code displayed on screen
• Click on the section you want to edit and make the corrections
• After making the changes, finally click on “Submit”

Or 

Try to login in GOAPS login do the same thing here...you may have to pay for it.

Hello Bikaspradhan,

You can open correction portal in gate 2019 website by logging into GATE Online Application Processing System (GOAPS). You can reach there through the link given below

Https://appsgate.iitm.ac.in/

After visiting the above link you can correct your information

All the best for your examination 

Thanks for query, you may visit again