Hello,

After you appear JEE main in janurary session keep on preparing. After april session they wil release the merit list for jee advance. If your rank is eligible then you can appear JEE advance and if your rank and score is decent enough and satsifies the selection criteria for any IIT campus across India then you can get an admission.

To get an admission  at IIT hyderabad, you have to secure a rank which will be in the cutoff rank range of IIT Hyderabad. Every IIT have different cutoff for different branches. SO you have to check accordingly. With out JEE advance you can't join any IIT campus. SO prepare accordingly.

Hope it helps!