I am taking off my mask in my sleep .I told my doctor and he suggested a chin strap . What do you guys think ..........hoser in Ky

I am new to this. I just started using a cpap with a mask that covers my nose and I sleep with my mouth open .So in the middle of the night I am taking off the mask in my sleep. Does anyone have any suggestions on what I should do ....the sleep study said I have severe osa the score was 130 and my o...