We can’t see how far you’ve got switching over to MQTT2, but the general gist is:
- Create a Thing Channel for each of the topics you want to subscribe to.
- Link your single Item to each of those Channels, separating them with commas. Yes, you can link multiple Channels to a single Item!
I tried to write a little about it as I do the same, for very similar reasons - see Status on startup in the following post:
