The strategy my SO and I have found works well with our toddler is to find activities to replace the scrolling habit with activities that provide a better model for him (but can still occupy us). We both read paper books around him, under the theory that he can't tell "reading a book on the phone" from "scrolling social media", or do our versions of crafts, or reach out to contact friends and family.
There's a plus side for us as well, since reading, doing hobbies, and being in closer touch with friends is what we would (in our unwarped-by-phone-addiction moments) rather be spending our time doing.
I'm going to be a father in a couple months and I'm observing most of my friends who did care about avoiding screens for their children give up partially on the idea because they've categorized it borderline impossible. I'm talking about parents who did deeply and seriously care about it prior having the kid.
Meanwhile I have two othwr friends who kinda got away with no screens. But i feel they do put a lot more effort for it.
So my take observing those samples: expectation management and be self-aware of how much sacrifice does it take.
If anyone has more adivice on this I'd appreciate too.