So not with jitsi but with every other online meeting ...
Doing L3 tech support for Red Hat, I'm often joining just about every major online meeting ... Gmeet, teams, webex, and bomgar
I have a poly headset that does Bluetooth or it's own dongle. I specifically have to configure the meeting software to use the headset.
If I don't it doesn't always resume the connection for the next meeting.
I just bought a wired headset for this reason. All I have to do is plug in the headset for the meeting and the defaults work fine.
I'm running fedora on everything. I found a package that would create a virtual sound device and then you could add your speakers plugged into the headphone / audio out Jack + the Bluetooth. I didn't have much luck with it but didn't have a whole lot of time to play around with it.
Sound is probably my biggest pet peeve at the moment.