There is a missing feature or something not implemented my matrix servers as an option as far as i can tell. You can currently follow someone, but there is no way to reduce the frequency of posts to show from that follow. Missing options:
1. show one post a day
2. show three posts a day
3. show 10 posts a day
4. show all

This is a problem also in other apps including RSS feeds, freetube, etc

Limit feed frequency of users you follow. Even Instagram or Facebook doesnt have that.