Is it possible the body can't heal on its own after tummy tuck? (photo)

Wounds can be frustrating and slow to heal.  It sounds as though you are keeping in good contact with your surgeon and you are both actively trying to heal the openings.  There is no harm seeking a second opinion, but I would also mention your concerns to your surgeon to see if he has any other interventions he would recommend first.

Hey Rafe-
Everything that your surgeon has said is very reasonable.  It is very important that people realize that wound healing complications do happen not totally infrequently to some degree.  While it seems that yours was at a larger degree than we generally desire everything that he has done to get you healed up to this point is totally correct.  That being said I would talk to your PS and see what his long term goals are for you.  Generally most plastic surgeons will want to wait a few months to allow the skin to relax a bit and then either under local in the office or in the operating room cut out the areas that had to heal with packing and sew them up nicely.  Generally the more relaxed skin and smaller amount of skin removed allows for less tension on the sutures and it heals very nicely without any long term complications.  It is also important that you are not smoking and taking care of yourself with a good diet or vitamins if you are dieting so that you can heal optimally.  Best of luck; you’ll get there!

I would let the body and scar fully heal before any revision is undertaken, despite how bad you think it looks at this point. The exception to this is if there is an active infection which it doesn't appear you have. You might be having a reaction to permanent sutures which I have seen, sometimes causing the incision to re-open as the sutures act like a foreign body. I would ask your surgeon if you have any of these still in place. Once fully healed, then a scar revision can be done to give you a much better appearance.