Oh how I wish I knew the answer to the whole sleep question with MS!!! Between it and the fibromyalgia, the pain becomes so much worse whenever I try lying/sitting still for any length of time. Plus my circadian rhythmn is messed up too -- must have something to do with that portion of our brains. Like you can see, it's now 1:05 am and sleep won't come until daylight even though the fatigue causes me to doze off in this darn chair.
I actually tried sleeping in my bed instead of recliner two nights ago, only to have to get up and switch with a terrible backache that lasted two days. Of course I can't move very much once I get in bed, not even to turn over, so that's probably why I end up so sore. If I have an appointment during the day, I make it for afternoon. Having nobody else here to worry about, it doesn't matter what hours I keep although my family and friends think it's sooooo weird sleeping during the day. If they spent a day in my shoes, they'd change their tune quickly! But when you can't go anywhere anyhow, what difference does it make?
Sorry I don't have any helpful suggestions, but just know you're not alone.
Gentle hugs...........