BitWarden - External access to local repository

I’m interested in using the BitWarden add-on to host a local repository for passwords etc. but I’d like to be able to access (and update) entries when out and about. I’ve been able to install the add-on and access it on the local network. I’ve installed the iOS app. I’m looking for advice on security setup.

I should add I run HA on a Ubuntu server on my home LAN. I have a duckdns defined external name and use the Nginx HA SSL proxy defined to provide https access to HA. Has anyone got a similar setup who is also using BitWarden?

Thanks in advance.