How in the world can I get on a schedule?!?

That's exactly what my boyfriend does. Lately he' been trying something different...He stays up all night to "fix" it, but instead of trying to sleep the next night, he'll go to sleep as soon as he feels tired in the afternoon, around 6. When he is able to do this (about half of the time) he wakes up fully naturally around 3 am. He does his thing, goes to work at 7, comes home around 12 and does whatever until he gets tired again. He can usually do this for an entire week until the weekend screws his schedule up again. Usually he can get back on it by staying up all night again.