Keep Navigation WatchOS App on screen

I am building a Navigation App for watchOS (Apple Watch only App) that works offline, only by using GPS.

The user can choose a saved GPS location and navigate to it. If the user selects a location, he will see the direction and distance to the selected GPS location. If he doesn't need the navigation anymore, he can stop it.

I have already built this part, but here is my problem.

If the App is not showing a navigation, it should leave the screen after 2 minutes (or after the time that is specified in settings). If the App is navigating, it should stay on the screen. This is the same behavior that Apple Maps has.

Can anyone help me how I can do this?

Thanks in advance

Simon