Hello student if you've already filled the application Form you can Make the corrections through Jee correction window. Jee main correction window will open from 19 th January to 24th January.

Generally its recommended that don't use salutation while filling name.

For more details refer to the link mentioned below - https://www.google.com/amp/s/engineering.careers360.com/articles/jee-main-application-form-correction/amp

Feel free to comment if you've any doubt

Good luck