First of all, from what I read – do not assume he is even thinking about marijuana-
So, I’m going to clarify you some things I read.
He was there on shabbos- so, he still comes home.
If he sleeps all day- thats normal, most guys do at that age!
Especially in the summer.
I may just pop in time to time- but it seems there is more to it every time. I know it’s hard.
But, just let me say this- which I mentioned before. Try not to let it take control over you. Thats the worst you can do.
If your son sees his comments and actions are causing you stress, and he indeed wants something out of it. Maybe he just needs more loving attention.
As mentioned before by someone else- give him love, no matter what the situation is.
One more thing to clarify. DO you live in America or in Israel?
Now it is unclear.