Then don’t. Set a shortcut or automation to only change the watch face.

🤦‍♂️ Could not come up with it.

AOD?

Focus modes don’t have to be specific events or times. I have a “personal” focus that has everything I want on my watch face, iPhone lock and home screens and hides all notifications and apps I don’t want to see at those times. I can then toggle it on and off with a swipe and two taps on my phone or a shortcut run from the action button on my watch. I use it several times a week for different reasons.