This is a tricky one. Each client is different. Many clients just don't look at notion/videos that you send them. It is what it is unfortunately. But some do. So I'd try starting with Notion. Instead of replying to their question, perhaps share the screenshot of the part of notion where the question is answered & update notion as you go. What we've sometimes done is to get the client on a call. Make them screenshare. Then make them go through the documentation or wireframes. If we screenshare & go through wireframes, they are passive. When they are screensharing & going through wireframes on their computer, it is more active

Nice. reminds me of windsurf codemaps Have you seen this https://www.youtube.com/watch?v=HKIEkdSxefw