Hi ! Change of streams

I opted for PCB science in high school when I really didn't have any interest in any of the fields in science field ( medical related career options ). I always wanted to go for commerce but due to some reasons I ended up taking science. Next year around April I'll be done with my boards and by July , my NEET exam ( basic medical entrance exam of India ) but I don't really want to become a doctor. I have researched a lot about shift of streams but no one has provided me the exact info I needed. I want to know if I can go into business studies or administration after having completed my high school with science at this point.

Also point to be noted - I don't have much knowledge of all the topics which are usually covered in high school and I have to prep for my boards with science semester so there's not much time on my hand to learn the basics now. Some people told me that it's almost impossible to get into a good college at this point because I'm running late. I don't know what to do. Please help.
#changeofstream
#sciencetocommerce