Nate, forget the notification settings!! Go straight for airplane mode. 😀
Not sure your stance on Apple vs. Android, but Apple announced in their keynote last week, iOS 12 will include more features for “staying productive.”
For example, set times for do not disturb, shortcuts based off activity (i.e. Hey Siri, I’m working and she’ll automatically switch to your presets for said activity) and pretty sure notifications are now organized together, which means less noties!