The very basic criteria for admissions through NEET-UG is that you need to clear your class 12 with a certain percentage. 

If you have joined some other course or if you're simply preparing for your entrance examination, all that you will need to produce is a gap certification stating that you are no longer continuing the course that you took in the time interval between your class 12 completion and admission into a medical college. Do not worry much. 

Hello Soundarya

Don't take so much stress and calm down. We are here to help you.. guide you.. and clear all your queries.! 

I would suggest you that if you are determined to give NEET 2019 then you have to leave BSc in between and completely focus on NEET. Your NEET score will only get you admission in any of the medical college. So work hard accordingly and study well.!

Hope this helps.!

All the Bestt !