My 7yo is obsessed with YouTube shorts and I'm losing my mind

Okay so my son discovered YouTube shorts like 3 weeks ago and now he's literally watching the same 15-second clips over and over. Like the same ones. I set a 30 min limit per day but he's figured out how to restart the timer by logging out and back in (I didn't even teach him that lol). The algorithm is clearly designed to be addictive for kids. Anyone else dealing with this? What's worked for you? I'm thinking about just removing the YouTube app entirely but then he loses access to the actual educational content too.