Well, I'm certainly no personal trainer -- I can't even get my own darn routine up and running...
For the weekend I'd say try to figure out a bit more about what it is that is feeling "uncomfortable", you describe it being from sitting. Still got your bike and walking routines in place & feeling ok from those?
Maybe you need to schedule a massage for next week, some time to work on any of the fascia that might be tight, if you think that might help.
Yes, it is the early days and it's a bit of experimenting trying to determine what kinds of movements and activities feel good and helpful and what might not be as good just yet. There's also the balance of having enough time for rest and assessing if an activity bothers you a day or two later -- it's not always immediate, at least for me...
Have a good weekend,
Cardie