I haven't been diagnosed with a sleeping disorder, but "menopause" has hit my sleep patterns out of the field. These are the steps I take to get a few hours of consecutive sleep.
1. Be as active as possible during the day. I cycle, when weather permitting, an average of 40 km (25 miles) every morning.
2. I only drink decaf coffee.
3. I walk the dogs (you don't need dogs to walk) for 30 minutes late each afternoon.
4. I either go to the gym 3 days a week or do a work out at home. At home I do 3 x 10minute sessions.
5. I stop watching TV and using any technology around 8 pm.
6. I always do deep breathing exercises when I go to bed.
7. If I wake, I will do more deep breathing exercises and meditation.
8. I'll also do some gentle stretching if I'm awake and the meditation hasn't worked.
9. Reading! This activity will get your mind off not sleeping and keep you in the moment. It may take 45 min - an hour to get back to sleep, but at least you do get back to sleep.
Hope some or all of these tips help. I have to say there is the odd night though, when I give up and read for a number of hours. The body and mind just won't agree on sleep.