Hello student I'm sorry to inform you but this not possible to transfer from on course to another course.

In case if you need to change your course you need to appear in neet again and on the basis of marks you obtained you'll get a college accordingly.

NEET important dates :-

Registration :- 02 December to 09th February 2020

Admit card :-27th March to 03 may 2020

Exam:-03 may 2020

Results :-04june 2020

Feel free to comment if you have any doubt

Good luck