Yes, there is a different diploma course for nutrition & dietetics known as " Post graduate Diploma in Clinical Nutrition & Dietetics ". The course is for 2 years and anyone who's graduate is eligible to pursue this course.

For interior design also there are different diploma courses offered by different institues. A few of them are listed below. (Minimum eligibility for this is 10+2)

*YMCA, Delhi

*Hamstech institue of creative education, Hyderabad

*IIFT

*JD institue of Fashion Technology, Mumbai