At the same time i was developing and testing out #Nostr bouncer (or proxy) relay called Bostr: https://github.com/Yonle/bostr

The goal here is to reduce client network bandwidth usage, and allowing users to get notes & posts from 20+ relays that the bouncer connected to.

We have a testing server here, Which you could configure your #nostr client to connect to this bouncer.
https://bostr.yonle.lecturify.net