Hello,

If you have mistakenly filled out the JEE Main form under the general category instead of OBC, you should contact the JEE Main authorities or the examination conducting body immediately. Explain the situation and request them to make the necessary corrections to your category information. It's essential to ensure that your category information is accurate to avoid any issues during the examination process or during admissions based on your JEE Main scores.

Hope this helps you,

Thank you

https://learn.careers360.com/engineering/jee-main-preparation-material/