On his phone, i use the screen time function that comes with every iphone. I set a max usage for all my social media at an hour per day. The third thing i do to protect myself from social is investing in myself and my mental health long term. By investing in things like gratitude practice or mindfulness, exercise, diet, reading and everything else that's part of my mental health stack, i can create more of an awareness around what intrinsically drives me,. This will make me feel more impervious to the temptations, the doubts and the phomo that is created by social media.