Diploma

Please say how many years of course you have done and automobile and B.Com is different stream, so you will not get Government College, you can approach any private college they may give you admission.

Yes, you can do B.Sc in IT in lateral entry scheme where you will be in 2 year directly. So, only by spending 2 years, you will be completing your B.Sc degree.

Amity University Mumbai has interior design course and to take admission you need to have minimum of 55% in your class 12th boards. The duration of this program is of 4 years. Before you join, there will be a small exam for the selection procedure which you have to clear to get the seat in interior

As I am not sure if the above-mentioned college offers lateral entry admission I would request you to contact the college authorities for a better understanding.
Link: http://www.rizvicollege.edu.in/contact-us.html

For doing a Diploma in fashion designing the course fee deadline set by UGC is under 1 lakh for any Diploma course in fashion designing, be it any college. Diploma courses are like from 6 months-1 year and every student who is doing Diploma in any fashion designing college gets assisted in the job.

Hi Jayant,
The energy sector of India is growing very fast and to cope with that massive growth India needs skilled energy management specialists. NTPC School of Business aims to bridge that gap through its world-class PGDM (energy management) course. Students will get a unique learning opportunity

Request you to provide full details about your background and your education, so that we can guide you with best possible solutions.

As per your interest and dream please choose a good college & do a PGDM/MBA on Travel & Tourism Management.
In this field opportunity is good because foreign travelers in India are increasing 7.1% rate.