I havea idea about new feature in digital wellbeing. You can add new feature in digital wellbeing named as "Block App Launch ".
In this feature user can set availability of App.
Eg. We have Gallery in our phone . Select Gallery and set time on it like, I want Gallery open only between 12:01 pm to 3:00pm. Now because of it we only use Gallery between these 3 hours. If the time run out. We can not able to Launch Gallery like that app that we selected. This help people to out of it's addiction.