Transferring to Nursing

Hello! I’m currently enrolled at Bing’s Watson school for computer science for Fall 2016. However, I’m looking to transfer to Nursing and I have heard that it is rather difficult. Does anyone know how to do this or have similar experiences? I am really confused about what I should do when registering for classes and such. I’m also looking into transferring to other colleges such as Hunter if it is impossible at Bing. Any advice would be hugely appreciated. Thank you!