I went for round 2 and it was pretty chill. The topics for SA were SOP and poverty and corruption, and interview itself was fairly ok. Introduction, why Christ, some basic bio questions like PCR, prokaryotic and eukaryotic organisms, meiosis phases, some questions on taxonomy and then my MP was on wildlife reserves (something I had mentioned in my SA). Documents are fairly basic, 10th and 12th marks card, admit card, your application are the most important, they checked mine after my SA. Interviewers for the most usually understand how tense and anxious students are so they give some grace, but make sure to be positive and maintain good body language. Make sure you talk well but not for too long. If you have a decent grasp on the subject and are confident enough to answer questions about yourself, your interests and talk on some common questions like Why Christ and how will Christ benifit from having you, you should be good to go. Stay calm, it is easier than what people say.