I'm at 10 weeks now, and have finally started feeling well enough that I can get lots of exercise in, which seems to be helping the sleep issues. For about two weeks around 7-8-9 weeks, I was miserable with waking up and not able to get more than 2 or 3 hours of sleep at a time. It really has eased so much and I remember this happening the first time around, too. It might be a bit different time frame for 2 knees at once, but I bet you'll see some relief in a week or two. The drugs to normalize and ease irritation and pain should help, too.
Thanks
@BananasKnees and
@Maggie94 for the hugs over my senior boy. We just took a walk of about three blocks and it takes him a long time now. He trips in the grass and ends up on his nose, which really bugged him at first, but now he just sighs and picks himself up and keeps going. It would break his heart if I didn't take him out every day, but some of our walks now are well….long in time, but short in distance. I'm glad to be doing it. Now he's collapsed at my side, snuffling my foot. He is the most devoted dog I have ever had, and a soul mate for sure.
Laughing at the world clock issues. My husband is English, and his mum just died year ago, and his brother emigrated to New Zealand, so I've always got that clock at hand. Husband's mum had three clocks on her wall--London time, Auckland Time, and Denver Time.

Even with that, it can break your brain. I get really lost in New Zealand for awhile. What day is it? What time is it?