Dreamwear full face mask leak, frame slippage

[Rgn3]

How can I prevent the Philips Dreamwear full face mask from slipping forward on the top of my head? I have been using the Dreamwear for a few weeks and the problem occurs with both the regular and large size frame (I have a large side head)
Details: The frame is stable, and the mask does not leak when I initially tested prior to sleep. When I wake up within a few hours the frame has slipped forward on top of my head. I have adjusted the straps for both the frame and the mask without success.
Questions: Could my pillow be contributing to the problem through forward pressure on the head hose and is there a style of CPAP pillow that might help? 
                Does fixing the position of the top of the frame make sense. I have read of others who use hair clasps to prevent the frame from slipping but I lack hair in that location! Does it make sense to try a strap to attach the top of the frame to the behind the head fabric?  
Other ideas? Thanks for your comments.

[SideSleeper]

Watching this as I am interested in the Dreamwear FFM.

[clownbell]

Also watching because I like the DreamWear FFM but have the same problem with frame slippage. Medium size frame slides around. Small size frame puts the hose at my hairline, not at the top of the head which I think is the desired location.

[Rgn3]

The issue was the tubing pulling on the frame of my Dreamwear. So I now place the tubing under my pillow then have the tubing exit from the top of the pillow to attach to the frame (My bed does not have a headboard).

[Gideon]

Command Strip/hook on the wall? would that work?

[Rgn3]

Anchoring the tubing to the wall is an additional option for me (after our bedroom painting project is complete).