BFA

If you can come to Kolkata, then you can apply for B.Sc in media science.
You will get lots of hands on training and also internships for media world while you study.

Some of the good colleges for pursuing BFA are:-
1. Faculty of Visual Arts (Banaras Hindu University), Varanasi
2. College of Arts, Delhi
3. Department of Fine Arts (Kurukshetra University), Kurukshetra
4. Sir J. J. School of Art, Mumbai

After completing your graduation you have a choice to work as an art teacher, artist in government offices or photographer. You can also start your career as a freelance worker and go for direction, clothing, photography, television and fashion.
The fine artists work is to produce artwork by using a wide variety of media and techniques.
You can display your work in museums, private galleries or have private collections and get rewarded for your work. The objects made by you will sell in studios, auctions, stores or at arts and crafts shows.

If you opt for B.Tech then you will face competition in the society and if complete it, you would have a larger pay scale with direct employment with a reputed firm. On the other hand, there will be less competition and you would do better too with that, but there is less demand for it.
Good luck.

Admission to the course is based on the performance in the relevant admission test conducted by the university which you have applied for. Shortlisting is done on the basis of obtained merit. Preference is given to those who have previously done arts or painting at the HSC level.

The minimum duration of BFA is 4 years. You cannot gain a Bachelor's degree otherwise. If a course is less than 3-4 years it'll be called a Diploma.

Sorry, now changing of the course will not be possible. Doing so will be a waste of a year.
It would be better complete B.Com.

BFA Animation is a 4 year Degree whereas B.Sc/ BA Animation is 3 years. BFA Animation would give you more time to learn. However, 3 years degree can be followed by a 1 year stint in a studio which allows you to be ahead in terms of your career. Please refer to the link provided below for details on its difference in scope and career:
https://ask.shiksha.com/what-is-better-to-pursue-bfa-animation-or-b-sc-animation-qna-2388029

To get a better understanding about the scholarship please refer to the link:
http://www.amity.edu/m/Scholarships.asp
Mostly the scholarships are given based on your percentage in class 10th and 12th.