If I don't do well in JEE, what other options are available for me?

You can go for IISER, it is equivalent to IIT.

Hi there! If you don't do well in JEE than you can take admission in private engineering colleges also you can give exams like COMEDK, CUSAT, WBJEE OJEE & other state government engineering exams. Hope you got your answer.

If you won't be able to do good, then also there are various options for you to go forward in more reputed colleges then the NITs and IIITs like there are some state governed colleges that are far better then most of the NITs in that you can go through the state technical exams and in colleges like