I'm by no means an expert, but something I lean on a lot is two key assumptions:
- People tend to talk about the things they want to talk about
- They expect everyone to be aware of 1. and to converse accordingly.
What this means is that if you set a topic of conversation, you are hinting that you want to delve deeper into that topic. This can be hard if you're ND because sometimes you just think out loud surface level thoughts that you don't actually think would make a good topic of conversation. It also means that if you want to talk about something, often the best way to start that is by asking a question to the other person where your answer to that question is the thing you want to talk about. People often reflect a question back at the asker after answering it. So for example, if I want to talk about a movie I watched recently, I might say "did you see any good movies lately?"