i think i have filled the jee mains april form as a fresh candidate though i have given the jan attempt. what do I do now as tomorrow is the last date for form submission.

Hello Aspirant,

There is no issues if you have applied for jee mains April session as a fresh candidate.
As long as you have valid documents if the details you have provided in your application form you can use the marks of either one of your attempt.
If you have changed  an details in your fresh application form then you will have to provide valid documents for the same if you will use the  ire of this attempt.

I hope this helps