Unfortunately not yet a feature. I spent hours in googles chat support
and worked with 4 seperate support staff and this is the result “You can
schedule your Nest camera to turn on and off at specific times
regardless of whether someone’s home or not...
Scheduling feature to turn cameras on and off is sorely needed. It’s
available on the old cameras which used the Nest app. Unfortunately not
a feature in the Home app that is required to use the new cameras.