I got visa for a one year pg diploma in September 2017. I went there and got enrolled but due to some problems I had to withdraw from college. Actually my mother got seriously ill so I was in need of money also that is why I had to do that otherwise I would not get the fees back. So I just came back in October. Now my visa is going to expire and since all my problems are sorted out I want to go back. I don't know where to find a correct solution to my problem. I know I can apply for a new visa but is there any additional documents I have to add?