I'm now 7 months post-op and I have full feeling in my face again (yay!) and no tingling anywhere except when I touch a tiny part of my upper lip above the right corner of my mouth. I still have sections of my teeth and gums that are numb, and some are still very sensitive to touch. There are two teeth in particular that make me cringe when flossing because the gums are so sensitive it's painful!
The amount I can open my mouth (almost 3 fingers) hasn't changed in a few months now, but I think it's within the "normal" range. I could open pretty far before surgery (4+ fingers!) but my jaw would also pop when opening wide, so part of the extra range was probably due to some joint dislocation. It no longer pops which is great! So much more comfortable. Sometimes I have some pain and stiffness around the plate on the right side of my lower jaw after chewing or clenching, but this usually goes away quickly. I asked my surgeon about this at the last appointment and he said that he didn't think it warranted anything drastic right now (ie. plate removal) but I should go easy on the chewing if it flares up. Hopefully it'll just go away with time. I used to have some random stabbing pains under the right side of my nose when I smiled wide but that's stopped now.
My lips are finally feeling more relaxed when I close them. I think getting the braces off will really help too. I can almost follow the "lips together, teeth apart" rule that's supposed to be so beneficial for TMJ problems but which I could never do properly before.