Now, about the sleeping:
Problems with sleeping are part and parcel of this recovery. We even have an article about it, which was included in the post-op reading given to you earlier.
Sleep deprivation is pretty much inevitable - but what causes it?
It can take a long, long time for your sleep patterns to return to normal. Until they do, try to make up for lost sleep by taking daytime naps. Don't try to stay awake during the day, in the hopes that you will sleep better at night. Unfortunately, it doesn't work that way.
Sleep where you can, how you can, and when you can. All those naps add up to the amount of sleep you need.
Don't lie awake in bed, clock-watching. That makes it worse.
Instead, get up, move to a recliner or a couch, watch some mindless TV or read a magazine - anything to take your mind off trying to sleep.
I moved into the spare bedroom, so that I could read or watch TV without disturbing my husband.
Some people take up a hobby they can do in the sleepless hours. I know of one person who taught herself to crochet by watching "How to..." videos on TV.
Don't worry about not sleeping. It will sort itself out, as time passes.