The 13 mini didn't solve any of these issues for me plus the worse battery life. I upgraded to 16 pro max. My laptop usage also went down from there. Total screen time probably stayed, but now i carry most of the time just a phone instead of phone and laptop. If you want something less addictive there is probably the apple watch but you still need the phone to configure
and now you're strapped to a device 24/7 just for the sake to be used less.