I have do not disturb active on my Android phone overnight until 6am with all notifications blocked. Between 6am and 8am, I would like to leave do not disturb on but allow phone calls. i.e. silence all notifications except for phone calls. Setting exceptions to do not disturb appears to apply to all schedules. There doesn't seem to be an ability to set exceptions only for selected schedules which I think is a poor design. Is there any other way to achieve this?