If you can connect to your node using lndconnect then you just set the host in Zeus node configuration as your router's IP and set port forwarding according to your node's IP in your router's settings. If you have an always-on Mullvad VPN setup on your phone then Zeus is connecting to your node using Mullvad. Then Tor is not required anymore but the Tor configuration can be saved as well in Zeus if you ever want to switch to that connection method.