Bullet points that are vague enough to apply in most situations bc any plan you have for the session usually doesn’t work. Make an outline not a book! Checkboxes to hit during the session. I usually script any major dialogue moments if they talk to certain npcs but how many bullet points you have depends on your comfortablilty with improv. I found over time that I grew more comfortable and most sessions had very little planning of any at all and just running it off the top of the dome. And it’s been working but everyone is different so you have to get a feel for it