Yes.

You will have to apply for IIIT-H separately if you want to get admission through Jee mains score and the complete admission process is given below -

https://www.iiit.ac.in/admissions/undergraduate/jee-mains/

There are other mode of admissions as well which you can check below -

https://www.iiit.ac.in/admissions/undergraduate/

Good Luck!!!