I feel like it's a losing battle. DDs (12 & 14) are on all the time. Although at times they both recognize that they're on too much and cut back on their own, but it doesn't last. DD1 will even have Youtube shows going while she's doing her homework! Luckily for her, her grades are good but cmon.
I am afraid that ship has sailed, at least in our house. I have no idea how to reign it in. I'd love to hear ideas. (Sorry I had none to offer, just letting you know you're not alone!)
"Every mother needs a wife." - Amy Poehler, Yes Please