Well done!
I mentioned in my last fitness post that I've been thinking a lot about willpower... and how the common theory is that you have a finite amount of willpower per day so spending your willpower on, say, not doomscrolling might mean you have less willpower to make healthy eating choices... but instead it might be more like an emotion... so it might be worth looking into why you were doomscrolling (ie, anxious, exhausted, quick dopamine hit, etc) to help defeat it. Or if cold turkey works, do that instead.
One thing I need to work on is resting well. I push myself to be productive a lot, but then I'm not really recovering ever... so I really need to figure out how much rest I need and what is actually restful so that I can be actually efficient and productive.
RE: Cutting out the bad Mobile Phone Habits