I’m unsure if it’s a strict requirement for AQA as I did OCR but I don’t see any reason why you wouldn’t do them. EPQ is very much about the process, not just the final essay, so you need those things to provide evidence. The activity log shows how you’ve broken down your project and gone through the process, I don’t even know how you don’t keep a page of research and sources because you need to remember them to go back to them? What have you been doing, just researching and taking notes? You need to record your sources so you can reference them with the links and if you need to check back for more information. Not sure why your school hasn’t told you about this, ask them! And yes get on it!