So with the Oculus glasses you don''t insert your phone into the VR glasses? If not then not sure it will work. FF6 requires Android ( v7.1 or higher ).
The two buttons on the Cockpitglasses are literally just mechanical buttons that create a virtual tap on the screen when depressed. So you can simulate what these buttons do by just tapping on your phone screen when the app is in FPV mode. A tap on the top of the phone launches/closes the menu and a tap on the bottom of the phone screen will toggle normal view and see-through mode.
And a hack for these buttons is to attach a strip of Aluminum foil with scotch tape to the screen (on to the top of the phone screen and one to the bottom) and leave the end of the aluminum foil dangling outside of the goggles...each time you touch the aluminum foil it transmits the electrical signal from your finger that will effectively simulate a tap on the screen.
Cheers