If he plays sports, make sure he keeps it up and does not choose
weed over being active. So its kind
of like making sure the
weed habit is in moderation.
Smoking everyday is too much, trust me he will get burnt out quickly and its not fun. But smoking weed as a reward or just on the weekends and a couple times durng the week, so long as his priorites are still being conpleted, then it should be fine. Keep in the look out for further drug use though.