Disable Sleep Tracking

I would like to be able to disable active sleep tracking, but still have the app automatically track my bedtime, waketime, and time slept when I begin “tracking”.

Currently for sleep tracking you can choose Accelerometer or Sonar. I would like to see a “disabled” or “time only” option as well.

You can essentially achieve this now by doing start tracking > menu > Save battery, however I would like this to be a permanent system-wide setting. For me knowing my bedtime and sleep duration are valuable, but the actual constant tracking is not.

Would love to have this feature