I've been trying to cut down on my screen time as well. me and my friend are doing this challenge to see who can last the longest without social media at all. (Including YouTube, Pinterest, Tumblr, Reddit, and the big 3) It hasn't been especially hard without the big three But as an web loser and an artist, being without Pinterest, Tumblr, and Reddit SUCKS!!!
Instead of scrolling I've been creating more (especially online I've been coding like a mf hahah) I've been in a drawing and reading slump for literal years. However, since I have nothing to consume besides books, I've been creating more art that actually kind of looks good. I've still been online for way too long, but it's being online talking to people, coding, and websurfing. I think that's infinitely better than scrolling mindlessly through social media :D
Now all that's left is to start exercising regularly...