i have already completed intermediate in pcm can i do intermediate biology suject as regular and then am i eligible to neet exam

Hello dear student,
As you have said you have completed your intermediate PCM so a question is not quite clear what does intermediate means here as if you have completed your PCM in class 11 and you are currently studying in class 12th and you want to take biology e as another subject in class 12. if this is what you are trying to ask then dear student if your school provides you biology in class 12th then it would be great because you need to have biology as a subject in class 12 and that should reflect on you result sheet which you get from board. You need to have biology as a subject in class 12th only then you are eligible to appear in NEET. It's not a very good idea because not many schools provide subject in the middle of session if they are willing to give you biology as a subject then it is good for you but there is a problem now , which is now you have to study biology of class 11th and class 12th together so that you can appear in NEET and get a good rank and marks which is really very difficult because you have to make understanding with biology for class 11 and 12 simultaneously which is the hardest but not impossible. the student is this was not your question then please feel free to ask again but more precisely I hope this is helpful for you.
best wishes