Thanks!
I got at least 1 month notice for the interview, but the reason I could not prepare much was that I had deadlines. I am studying for a masters degree, and just completed my second term. The timing of the interview was not that great. But I have today, tomorrow and day after to go through the questions and my documents.
I have the documents provided in the list, but not the police certificate for the place I am now living in (been here in ENgland for 8 months...came here after submitting my PR application actually). I have applied for a police certificate, but still waiting for the certificate. I have confirmation in my email, I guess if I don't get the certificate by Monday, I will have to do with the email confirmation.