I did, I watched very closely (and took estimated times) for a couple weeks and they were obsessed a couple years back. All they wanted to do was be on the phone or switch. If you close some doors then other doors will open up. Board games, actually sitting down and telling their day to me (and their mom), playing with the cats and dog. Etc. I give them a lot of freedom until around 8, everyone needs personal time that they own, including kids, then it's back to business of being a family and homework.
