I'm afraid it can be a bit of a job too attain and retain Sleep.
Everyone is different but..
At the start of all this for me, I found myself sliding towards rubbish sleep, I would have and awake from vivid violent dreams I had no idea why i was getting these, I begun too think i had PTSD , Because every time i closed my eyes it was there let alone when i actually passed out sometime during the night, Not only that i was awaking with my muscles so tense it would actually wake me with pain as well, All of this 2 or 3 yrs even before i went too see the Gp for the first time.
He gave me amitrityline too help me sleep, neither i or the Gp knew where this was heading too or where it would end up, but the amitriptyline eased some of the tenseness of the muscle pain at night, but it didn't give me a Deep sleep, I Still had and have the vivid dreams, and i still bite my tongue in the night, but fast forwarding a little i was given Madopar CR at for overnight which was remarkable in that it gave me Deep sleep for the first time in Years if nothing else.
Then a little while ago, i was given entacapone, a combination of that or over doing things at home, instantly wrecked that deep sleep, I was dead tired but couldn't sleep, but i re arranged the times too find that balance again, instead of stayin up late too take a pill too sleep i took it earlier too get the best from it at a time when i'd naturally be tired, if that makes sense.
So it's been by no means easy or will be i bet in the future, who know's what else is thrown into the mix will and can alter it all again.
your not alone
take it easy that's one thing i have learnt.