My big time sucks are hn, fark for news, and occasionally reddit. I'd like to at least drop reddit from my routine, and maybe only come to hackernews when I've gotten through every other article open on my phone.
Seem like good goals. The screen time app is nice because you can actually set limits on how much you can use an app then it bugs you with a warning.
I've been trying to read more lately, it's wonderful. Just finished For Whom the Bell Tolls, and started in on some Kafka. But it's definitely different then when I was younger and would just tear books up.
I think maybe I'll blacklist reddit at least with the proxy on my phone and then only browse that on the laptop which would be much rarer and far less likely since there's so many more interesting things to do on the computer (I just discovered the joys of tmux, how was I missing you all these years? With tmuxp, what a powerful set of tools.)
Anyways, that's my experiences, these little gadgets are incredibly addicting, and with three link aggregates with nigh on never ending pages of links it's ridiculously easy to spend a tremendous amount of time with your face in the screen.