For those who don't know this

Everything will be fine, This isnt the end of life ATALL

If you have studied for it sincerely then don't mess up your preparation by stressing out at this stage a few days before the exams

If you havent studied then its fine as well, Maybe its for a reason, Maybe there are some other opportunities waiting for you which you have no clue of yet

Some nervousness is normal, i believe everyone is nervous, But Everything happens for a reason, Just trust and keep faith in yourself and in god....Its a mere examination and the stress only exists till the duration of the examination......Recently JEE and IIT's have been portrayed more as a Trend/Culture rather than every other college, So its not your fault that the society has overhyped it, All i wanna say is that your life is worth way more than any such thing, So stay strong and just keep faith in life!