I’ve scrolled through the article and another tip would be: Have an alternative. You can’t just go from screentime to no screentime if you have nothing to do off the screen, plan some activities.
Been there, done that. Listen to the person above me. I tried to do that in the past when I my depression was more severe. I thought that'd help me, but I replaced staring at my screen with staring at wall or just sleeping.
So you just tried to replace your compulsive use of your devices with nothing, like the poster you replied to advised against. Great.