First, you don't need all of the PVR commands in device mode, only some of them.

In Device mode it gives you EVERY command available for that device - that's the whole point of Device mode.

Decide which commands you need in your watch PVR activity - the ones that you use at least once a day - go to the activity and add them. Use Device mode for the others that you only use once a week or less.

Note that these are in addition to the commands that you've programmed to the hard buttons. In my case the only PVR command I use from the LCD in my watch PVR activity is the List button that shows recorded shows and format which changes the display format.