How to update Broadcast Data after hosting a server?

I'd like to use the broadcast data to transmit specific metadata using delimiters to clients searching for joinable servers, such as current server population.

However I realize that broadcast data needs to be set before hosting a server, and cannot be changed while the server is being hosted. So this makes broadcast data useless for updating current server metadata to searching clients.

Is there a workaround for this, or perhaps I am mistaken? New to multiplayer with UNet/Mirror. Any help would be greatly appreciated. Thanks!