Hey, to join any IIT or NIT or any institute for aerospace engineering you would have to go through JEE Mains or GATE entrance exams which requires PCM(physics, chemistry and mathematics) so if you are up with all this three subjects in your Bio-math group then you can definitely go with aerospace. But if you don't cover those three subjects and still interested in aerospace then you would have to find a way to cope up with all those subjects. Hope this info was of help.
Best of luck for future.