I've been using Github to document what I'm doing in my life, not just research, but includes it. Is this a valid choice? thanks!

Hi so recently I'm starting to write my research plan, then I came across the AI use table so I am writing the entire thing again, then I learnt that I need to write a LOGBOOK, and there are multiple forms I need to fill in, since my research topic is about Human Behavior including students. I'm honestly overwhelmed. This is my first time doing anything like this and I don't really have a mentor who knows the ISEF process.

I have a few specific questions:

1. What exactly goes into a logbook? Do I need to write down everything I do every day?
2. What forms do I actually need for a human subjects project? Any forms?
3. How do I handle AI use properly? I used AI to help with code and some drafting, but I'm rewriting everything now.
4. How strict is the IRB process for a school-based pilot study?
5. I have much more questions but I don't want to waste too much of ppl's time

and I am hoping to seek help or guidance from people who are much more experienced than me. Thanks in advance! :)