>>278358546
Lie down on your side with a pillow and ideally a body pillow to hug. Pull the lower headphone up so you're not resting on it, and use the body pillow to support some of the weight of your headset.
Alternately, just lie on your back with a pillow. Even the DAS knob isn't really noticeable if your pillow is fluffy enough. This will probably constrict your nasal passages and make you snore, though.