Seeking advice please


Before CPAP I used to sleep like a log (no one could wake me up hehe) but now on CPAP my sleep has become much lighter and I'm prone waking up between 1 to 3am each night - not sure what is going on


Attached are some images from OSCAR. I'm using a ResMed AirSense 10 with a Philips Dreamwear Full Face Mask.
Based on some YouTube videos (from TheLankyLefty27 and others) I'm suspicious if mouth/jaw opening is causing corresponded with erratic breathing - resulting in awakenings at night. However I'm somewhat confused looking at OSCAR data (perhaps because I'm too sleepy! hehe


I've recently tried switching off EPR (it was at 3) which I think has helped a little, but still awakenings are still occurring.
I was thinking about purchasing the KnightsBridge Chin Strap or Cervical Collar to see if it may help, but not sure.
Any tips or advice welcome! Thanks

OSCAR Images:
https://1drv.ms/i/s!Aj291djUI9f6hYhpR5M ... g?e=ENaP2Y
https://1drv.ms/i/s!Aj291djUI9f6hYhqS_q ... g?e=ynfhRv
https://1drv.ms/i/s!Aj291djUI9f6hYhozgv ... w?e=S40KUG
Quite a few of these: https://1drv.ms/i/s!Aj291djUI9f6hYhneTb ... A?e=FsPaSa