Notifications causing screen waking
You can turn on Do Not Disturb ("DND") mode to prevent distractions or notifications during specific timeframes.  

Source:

Schedule Do Not Disturb


On your Mac, choose Apple menu  &gt; System Preferences or open "System Preferences" directly from the icon.
Click "Notifications".
Select "Do Not Disturb" at the top of the sidebar.


You can stop notifications during a time period, when your Mac is in sleep (useful if you sleep near your Mac) by checking the "When the display is sleeping" box.



If you want to receive call notifications even when Do Not Disturb is on, select the call checkboxes.