Got my 10yo interested in actual books and I don't know what to do

This kid has been a screen zombie for like 2 years. Two weeks ago my wife grabbed the Percy Jackson series off the shelf and just left it on the couch. He grabbed it out of boredom and... he's DEVOURING them. We're on book 3. He reads at breakfast, after school, instead of Roblox. I keep waiting for it to wear off but it hasn't. Do I do anything or just let it happen? This feels too good to be true.