Advancing the maxilla can have affects on the nose as you have described. Swelling still may be why you have the sensation of your uvula resting on your tongue. The maxillary advancement would have to be pretty significant to usually have this problem. Without examining you pre & post-op, it is tough to comment on that. Revisions can be done at anytime but since you are only 5 weeks post-op, I would recommend that you have alittle more patience before making that type of decision because soft tissue and bone healing after surgery can take considerably longer (6-9 months). If you still are not satisfied, get another opinion.

Not sure what your question is but find an Oral Surgeon that can help you.

The answer to all your questions is yes. I would seek an initial consultation with an orthodontist that is familiar with jaw corective surgery. Good Luck

Yes, but the results are not as long lasting nor as surgically correct as they can be when done with the assistance of orthodontic therapy. It is considered below the standard of care to do the jaw surgery alone without braces.