Hello,

Interior designing is all about art and science, the interior design students use scientific theories and concept to come up with artistic work. ..

There some top colleges for interior design courses:-

• National Institute of design, Ahmedabad
• Cept university  , Gujarat
• Indian Institute of Art and design, delhi
• Arch Academy of design, Jaipur
• J. J school of Art
• College of Architecture
• Pearl Academy
• Vogue Institute of fashion technology
• Sai school of interior design, delhi
• 
  
• UID Ahmedabad
• INIFD , pune
• INSD, pune
• MSU, Baroda
• World Institute of design, sonipat.

https://design.careers360.com/colleges/list-of-interior-design-colleges-in-india

All the best!!