Hi reshmi,

Yes you can prepare for NEET after being yourself enrolled in any college or course. So better is to go for whatever your like.

And yes you can leave the course  without any issue until or unless there is no bond criteria. Or any need of paying fees for leaving  a seat.

See, if such criteria is there then you should think twice. Otherwise you are free to do whatever you like.

Hope this answers will help you. Revert incase of any query.

Thank you!!!!