Hello,dear

yeah! You can change log in in your application form , and if you can't then the correction window will be open from march 11 till march 15, so ,you can change at that time as well.

Visit the below read this article will help ,it will help you , guideline are given in full description

https://www.google.com/amp/s/engineering.careers360.com/articles/jee-main-important-dates/amp

hope this will help you!!