Dear Paresh
Firstly,  remove that second thought be prepared always so that you can crack JEE easily. Don't take me wrong because it's also good to have more options what I'm saying is concentrate on to crack JEE. And also don't be sad if not too they are so many colleges accepting JEE mains marks. But you need to be get passed in mains.
Our team in Careers360 created a webpage for that, please click on the below link for the top colleges.

BEST ENGINEERING COLLEGES
Comment here for more information.
All the best.

If you fails in securing admission in good NIT/IIT's then consider taking admission in those university which are best in you state . Means if are from delhi then consider Delhi Technological University,Netaji subash institute of technology,IP university.You can apply for various entrance exams like BITS,IP entrance exams ,VIT,WBJEE and many more.They could prove to be a good choice. 

Shubham Goel (DTU)