Hi
I had a subtalar fusion, Achilles lengthening along with an external fixator and nerve release surgery in April and just began pwb last week after 25 weeks nwb and I can tell you, though not an apples to apples comparison, I am feeling the same things.
My therapist says my plantar fascia is tight and it should be after no use for 25 weeks and I shouldn't panic about every pain I may feel because my foot wasn't used for 25 weeks. I told him I am going to get him a shirt that says '25 weeks' on it because every question I ask has the same answer.
I have gone from basically nwb to 75% (and almost 100%) in about a week and am feeling some pretty strange things but unless they continue, I am trying not to worry. Right now I feel much better walking in a boot than barefoot ... I haven't tried a sneaker yet, foot is way too swollen.
Give it time. Our feet have been through quite a bit and now they are figuring out what we did to them
Good luck!