Dietitian

Hi,
Pursuing a course from a recognised university will be better.
You can do correspondence course from IGNOU

To do the Bachelors programme in nutrition and dietetics, one should have completed intermediate in Science with physics, chemistry and biology. The B.Sc. (Food Science and Nutrition) is a 3-year programme. You may not be eligible to pursue a B.Sc. Course in nutrition and dietetics.
What it takes to join Career in Nutrition and Dietetics Course:
10+2 passed from a recognised board (or equivalent) with Science.
or
10+2 passed from a recognised board (or equivalent) with home Science.
Please check for your eligibility before applying to a college/university for this particular course.
Regards.

Please refer to the link for information: http://eadmission.utkaluniversity.nic.in/aapplication-procedure.html.

I would suggest you to first complete your Bachelors and then probably you can go for a dietician course. As it would be tough to focus on both the courses together, if you want then probably you can go for a part-time certification course.

IGNOU is your answer for degree, Diploma and certificate courses on food and nutrition. I am providing a link for you to go through. Online admissions are going on. Last date is 31st January 2018.
IGNOU - School of Continuing Education (SOCE) - Programmes - Distance - Certificate in Food and Nutrition (CFN):
http://www.ignou.ac.in/ignou/aboutignou/school/soce/programmes/detail/244/2

You can go for M.Sc in dietics and Nutrition or Diploma in Nutrition and Dietics. There are many universities offering the same. You can Google for universities these courses.