Sir I am an neet aspirant who is an average student and waste time for the whole year what shlould i do to atleast get 300 marks

Question

I am currrntly appeared for 12 cbse board exam 

Answer 1

You've wasted time for the whole year?

What should you do?

Answer: Stop your self-indulgent wasting of time, and study very hard. Whether it's possible to get a successful outcome from any upcoming exam(s) is a matter of conjecture.