You're doing great! At this point (and actually through the whole recovery adventure) the main thing to remember is the knee is the boss. And the boss is injured and cranky and needs to be appeased to avoid meltdowns. 
If you're sleeping 4 hours at a stretch, believe it or not, that's not bad at this point. I told myself that overnight was a 2 nap period. I'd inevitably wake up after 3 or 4 hours, get up and read or watch a little tv and then go back to bed for a few more hours. Naps
were definitely part of my day for quite a while.
Gradually the sleep patterns improve.

If you're sleeping 4 hours at a stretch, believe it or not, that's not bad at this point. I told myself that overnight was a 2 nap period. I'd inevitably wake up after 3 or 4 hours, get up and read or watch a little tv and then go back to bed for a few more hours. Naps
were definitely part of my day for quite a while.Gradually the sleep patterns improve.
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