Am I eligible for interior designing in Hyderabad? What's its fee, best institutes, duration? Is it a 1-year course or for 2-years?

I have completed my B.Tech from Amrita Institute of Technology, Coimbatore in 2015. Currently, I have been working with TCS for 3-years. Now, I am interested to learn interior designing & would like to know some of the best institutes to learn, course duration and fee structure.