So, I just came back from the local lake, where I was chatting with a woman who had rotator cuff surgery on Friday, and was struggling to adjust her sling (I've had a little practice with them...)
During our conversation, I manage to help her relocate the shoulder strap to a more comfortable spot without messing up the shoulder and arm positioning.
Then I asked "where is your ice?" And she told me she used it last night. Now, I'm on my soapbox - one of the BEST pain management tools is ICE, Ice, ice... as often and as long as you can. I pointed out my daughter down on the shore, giving her Dad a paddleboard lesson, in her cast and sling, and said - "at 6 weeks, she still ices at least 4 times a day - and her recovery is going wonderfully"
Are you still icing? If not, I will recommend it heartily. One year out from thumb surgery, I still ice when my hand swells from overuse. Also, are you managing daytime discomfort with Tylenol and Ibuprofen?
Good luck.
Sue

Great pic, @barocco. I hope you'll add it to your profile.
– How to Update your Profile: https://connect.mayoclinic.org/page/about-connect/newsfeed-post/how-to-update-your-profile/

Here's hoping to better sleep for you soon. You may be interested in this discussion:
- Trouble sleeping after TKR: What helped you sleep? https://connect.mayoclinic.org/discussion/trouble-sleeping-after-tkr/