Hello renuka,

I really appreciate your determination. But here is the problem, as you have to have at least 75%(65% for SC, ST) in your board exams otherwise you should be in top 20 percentile of your board.

If you want to get into IIT, you should take a drop out but first you should go through this article-

https://www.google.co.in/amp/s/engineering.careers360.com/articles/jee-advanced-eligibility-criteria%3famp