Just got a notification to say my 15 year old managed to watch TikTok for almost 20 hours last week. She is in the middle of GCSEs and constantly uses that as an excuse to not get involved with family stuff (going out/non-screen activities) but is obviously finding time to be online. She is a good kid, no behaviour or academic issues but she only have one shot at these exams. What would you do? Leave her to it? Take her phone away in the day? We take it at bedtime until morning.