Tough one to crack since they are technically adults. Idk back in my day my parents would just say if I fail they would pull funding (they paid tuition room and board at state school) and I would have to come back home, go to community college and pay for it myself. That was pretty motivating. Key point is I knew they were dead serious.
You can also try to talk logic to him. Explain how much you love him and want him to be successful. And you really want him to try quitting the game for “just two weeks” and see what happens.
But if you are still paying for everything, internet included. Cut the funds.
You can also try to talk logic to him. Explain how much you love him and want him to be successful. And you really want him to try quitting the game for “just two weeks” and see what happens.
But if you are still paying for everything, internet included. Cut the funds.