Hello Anushka,

You will be eligible for JEE Mains in 3 consecutive years from the year you finish your 12 th standard including that year. JEE Advanced can be attempted twice in consecutive years.

After qualifying JEE Mains only then you can appear in JEE Advanced entrance exam.

You must meet eligibility criteria like age criteria, minimum 75 marks in 12 th standard in science stream from a recognised Board and 65 percentage for reservation category candidates, etc.

To get more information go through below mentioned link.

https://engineering.careers360.com/articles/jee-main-2022

You can check below mentioned link to get more information about JEE Knockout.

https://learn.careers360.com/knockout-jee-main-april/

May this information helps you.

All The Best!!