More hours on social media goes with more anxiety and low mood. That is a reason to aim at fewer hours, a conversation you can actually have, rather than at none, which usually ends the conversation.

What the research says

A review of findings from a study of more than 11,000 young people reports that screen and social media time has risen among 9 to 15 year olds, especially since the pandemic, with both cross-sectional and longitudinal associations to mental and physical health. Associations of that kind cannot tell you that cutting your own hours will lift your mood. They are a fair reason to try a lower number and watch what happens for yourself.

Strength of evidence: one line of research. A single study, or a theoretical account.