I have literally started to add every thought in my head into obsidian and already it feels like someone could probably recreate my mind from it lol

The best ADHD feature is the ability to link notes, even ones that done exist. So if you have a really specific idea about some topic you can just write it down, link it to the topic, and then get back to whatever task you were doing when the thought arose. Then when you have time you can find the idea again as long as you remember the topic or topics you linked it too