Hello Aspirant,

Yes of course, JEE-Main is the first stage if you clear the cut-off prescribed by NTA for JEE-Main than only you are eligible for JEE-Advance.

Firstly results of JEE-Main are supposed to be declared than after JEE-Advance registration portal will be accessible for you because if you clear the cut-off of JEE-Main than only you can register yourself for JEE-Advance.

For more details about JEE-Main you should refer to the link given below :-

https://engineering.careers360.com/exams/jee-main?utm_source=google&utm_medium=kg

And for JEE-Advance you should refer to the link given below :-

https://engineering.careers360.com/exams/jee-advanced?utm_source=google&utm_medium=kg

I hope this information helps you.

Good Luck!!