Caught my kid on YouTube at midnight watching some weird gaming channel

So I'm up late working on something and I see light under my 12 year old's door. Go in and he's got his iPad watching some random dude play Fortnite and talk about skins or whatever. He snuck it to bed. We've had the conversation about screens before bed affecting sleep but apparently that wasn't enough. Thinking about taking the device out of the room at night now. How strict do you guys get with this stuff?