Looking for best ways to route webex/ms teams on desktop and wifi calling/whats app (android) to a specific WAN interface.

I have a dual wans, one is Starlink and the other is DSL.   Starlink is great for non real-time traffic (i.e. downloads, movies, etc).   But when it comes to wifi calling/whats app on an android device or meetings such as webex, ms teams and zoom, it just gets interrupted too frequently.

How can I route this real-time traffic to use my DSL and not Starlink on the ER605?

The only routing I can see on the ER605 is either specific TCP/UDP ports or specific IP addresses, but this information from the providers is difficult to pin down.

Anyone have this already setup in their environment that can shed some light on how this can be accomplished?

Thanks!