I don't see such a setting in the Android Wear app.
Turn Google Now on or off on yr mobile:
You can turn Google Now on or off at any time.
Turn on Google Now
Open the Google app .
Touch Menu > Settings.
Next to "Google Now," select ON.
Turn off Google Now
When you turn Google Now off, you won't see the cards on your home screen anymore, but you can still use the Google app to search.
Open the Google app .
Touch Menu > Settings.
Next to "Google Now," select OFF.
Choose whether or not you also want to turn off Location History. Turning off Location History doesn’t delete existing history or turn off Location Reporting.
Touch Turn off.