Hi Sooty!
I just saw Poppet's message to you and wanted to stop by and see if I can help cheer you on as well!!
It is a slow go in the begining. I was house bound too, but not on the same type of restriction. What helped me to moderate the time some was a "scheduling" of particular activities for the day. There was a particular time for walking -- or crutching back and forth in the house and looking out all the various views to see what was going on in the 'hood. I had a particular time for watching half of a movie on tv and a time for lying in the bed and reading then taking an afternoon nap. It was incredibly mundane but if I had these little "bites" to look forward to as I moved through the day it made the day at least seem to move.
I, also, experienced the lack of motivation and initiative that I think you may have been referring to in CP's thread. That will pass when you are more mobile, have healed further and are not having to have medications that can scramble your brain. My reading was of utterly mindless type, nothing deep or complex.
No, you don't have any PT or exercises yet -- oh, wait Alex posted a stretch for you in message #101

when we were trying to get your calves to settle down and play nicely... it doesn't feel like much, but it is a little something you can focus on -- the calves and settling the restless legs. Remember, not comparing yourself to others -- we are just working on what YOU are able to do for now.
You also have that awesome bike to look forward to and since you were on that bike pretty close to when you had to have your surgery maybe you can try some zen-moments visualizing how you will be when you are back on that bike in the warmer weather. Maybe you'll bike to a lovely outdoor cafe and order up a cup of coffee and a biscuit to enjoy -- crutch free!!

Hope today will feel a little better,
Cardie