Hey there!

First of all there's nothing to be worried about, it's okay if you didn't study. 11th grade can be tough in itself and preparing for competitive exams makes it even more difficult. So don't feel bad about it. If you genuinely feel depressed please tell an adult about this, that is very important. If you want to prepare for jee for which you have plenty of time so nothing to be worried about check out the jee knockout pakage by careers360 as it will help you prepare really well.

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