Saturday
Please respond with either a "yes" or a "no".
Can Google Nest's voice volume be controlled independently from the Google Nest's media volume?
Sunday
Google Home and Google Nest speakers and displays don't have separate volume controls for Google Assistant and media playback unfortunately. As a workaround, you can try enabling the night mode feature which reduces the volume of assistant responses during set times.
Manage volume and LED brightness with night mode - Google Nest Help