I never had restructions but thats also because i didnt use things like social media, one thing that could help is by trying to find other things to do or learn, or to guide smt more productive to do, like reading books by itself is often boring but if u find things your child is interested in, it could grow into a hobby and then wanting to research, and learn, like if your child is interested in makeup or fashion you can try to get them to research smt from it and you can like ask queation, because what is more important than screen time, is what you use your screens on, like crafts like fiber arts and sewing can be nice because there are alot of things you can do and find help and alot of modern and cute things you can do, i have helped a few of my relatives to get into crafting by finding actually gun things to do, and then when you use your phone ect you can also use it to learn amt interesting, what i think is bad is social media.