Chatgpt, and indeed, any AI is better used as a way to generate ideas and frameworks for what you are about to write. Remember, University is not about getting the right marks. It's about getting the right 'smarts'. In other words, the experience of university is all about becoming a scholar in your field. You are training your own brain. If you just use AI to create the work, and to get the marks, then what will you do when you are in the professional world and a client has a problem that you got good marks in, but you don't really understand? Will you ask ChatGPT to consult with the client? And if you answered "Sure, why not?", then what do we actually need you in that profession for? We could just use ChatGPT and put you on unemployment benefits.
Please, do the work. Don't wait till the last minute. Be diligent. Put the time and work in. Develop your own brain and skillset. Ask yourself this: "Would I want the brain surgeon that's about to open my skull to have perfect scores at Medical school because they used ChatGPT to do all of their work?"