Excessive mobile game Pubg addiction.

My younger son a class x student is so much addicted in mobile games since last 2 years that his education getting affected severely. By virtue of my job I have to live in a different place from my family and normally visit to them once in a month. My elder son was very much studious and in spite of playing games he is able to get a chance in NEET and he is now 02nd year of MBBS. But my younger son is living in a virtual world and near him playing games is the most important thing and education is secondary. In spite of enormous effort for making him understand me and my wife failed. My wife sometimes lost her patience and scolded him as he normally used to play Pubg upto late night of 02:30Am and sometimes scolding and forcing made him furious. We have tried to take smart phone from him, sometimes stopped Internet connection from cable network but during all this steps he stopped taking food, became very much silent so we again compelled to reconnect this. pl advice what we should do