Hi,

I hope you are good. Yes, you are eligible to appear in both JEE mains and JEE advanced.

There is no minimum class 12th percentage required to appear in JEE in 2023. You just need to pass class 12th.

However, one need minimum 75%(General/OBC candidate)  or 65%(SC/ST candidate) to study in IITs and NITs.

But some state level and private colleges offer engineering with JEE rank only or with just passing criteria of class 12th+JEE rank.

I hope it clears your query.

Thank you!