Degree

Yes, you can take admission from the very 1st year.

Dear Friend,
Do a distance course if you are having lack of time. If you want to enter a job, do certification course. Better suggestion from my side - Do a graduation course from a middle level college where low attendance level can be accepted & side by side do a certification course from a good institute from where you can get a placement.
Thank you.

Here is a reference:
After Diploma, you can go with degree level courses or PG Diploma programs. B.Tech degree can be obtained with specialisation in Automobile Engineering or Automobile design Engineering. Admission to the course can be done through lateral entry and thereby you can save one year. Post Graduate Diploma in Automobile Engineering is also suitable for you. Or else, you can try for a job with railways, defense, government departments, etc.

B.Sc in Exercise and Sports Science- Manipal School of Allied Health Sciences
B.Sc. In Physical Education, Health Education and Sports - LPU - Lovely Professional University
There are a few popular sports courses colleges in India. Check here- https://www.shiksha.com/business-management-studies/sports-courses-chp.

At graduation level, you can opt for Eng (H) /normal Bachelor degree as per your interest and at the postgraduate level, I will suggest you to opt for MBA in Public Relations.

Hi!
You cannot get a degree at your convenience. You will only get it one year after the course is complete.