Last Tuesday, Philips Hue released a major update for its own app. Among other things, a function was added to start and stop the new sleep automations with a switch. However, so far only Tap Dial Switch, wall switch modules, Tap and Friends of Hue switches are supported. However, this should change soon, as a recently released software update for the Hue Bridge shows.
Sleep automation: More switches will be supported soon New firmware update for the Hue Bridge
New firmware update for the Hue Bridge