Try to get interested to what he is doing, talk to him, that way you can mention to him some cool stuff he can do with a computer like programming, even gamedev

Try to get interested to what he is doing, talk to him, that way you can mention to him some cool stuff he can do with a computer like programming, even gamedev He found an escape with computers, he found friends probably playing online, don't restrict that to him Reading books 9h a day or staying on your computer 9h a day is the exact same