You can talk to a doctor about using melatonin as a sleep aide to help correct his sleep patterns. That's the holistic approach and you don't necessarily need to talk to a doctor since you can get it pretty much anywhere for four dollars or something close to that in the states.

Still, to be on the safe side I would talk to a doctor. Then you can make appropriate adjustments if getting his sleep cycle under control isn't working. He could have anything from a sleep disorder, to depression to something else.

http://en.wikipedia.org/wiki/Delayed...phase_syndrome

Uhhh. I'm not a pro either~~