In Engineering JEE Main application form is over but there are many entrance exam for which you can apply like BITSAT, VITEEE, SRMJEE, Manipal and Amrita.

All are top level private engineering colleges who provides good knowledge and placements.

You have enough time to apply for these entrance exam. You can check the last date to apply for the entrance exam below 

List of Engineering Exams

Good Luck!!