hello yash,

it doesn't seems like clever idea, but if you're really interested then you can go in that career path.you can do post graduate diploma course in interior design.the bachelor's degree from any stream can eligible for PG diploma.the popular collegs offering such a courses are,

• DIFT
• GIFT
• INIFD
• Arch  academy of design
• lovely professional university

for further details,you can refer the official website of those colleges.

I Hope this information will be useful to you.

if you need additional information,let us know to help you.

Thank you!!!:)