If you go to a sleep therapist, the first thing they will tell you to do is strengthen your sleep hygiene. The most important factors in sleep hygiene are:1. Try to wake up at the same time every day. This is called sleep restriction. It can be incredibly hard for the first week or two but is essential for setting your sleep schedule.2. Get lots of sunshine in the early morning and throughout the afternoon. If this is not convenient (or possible, do to clouds) buy a Dawn Simulator Lamp or a SAD light. Both have been proven to work as well as sunlight in resetting the circadian sleep rhythm for the day.3. Stay AWAY from bright light, computer screens, cell phone screens at night, especially in the two hours before bedtime. Blue light blocks production of melatonin (sleep hormone). Download f.lux (free) and use it after sunset. Get a native amber LED reading light or book light. Native amber LEDs emit none of the blue light that blocks melatonin production. Read a fantasy book or something else enjoyable by amber light before bed. I review a few of the above brands on my blog here: Amber Sleep Lamp Reviews - Light Therapy Reviews4. Invest in a nice, soft comfy pillow and mattress (here are some useful reviews
sleepmentor.net/ – find the best one)5. Once he is feeling better, make sure he gets some exercise during the day.
There are more aspects to sleep hygiene, but these are BY FAR the most important.Good luck!