The best thing I can do is reassure you that with proper care and attention, this WILL heal. It is definitely freaky to go into a tummy tuck expecting this beautiful body and to come away a couple of weeks later with a HOLE IN YOUR BODY! This is something that happens when tissues run out of blood supply, and unfortunately, with tummy tucks, this can happen. The good news is that they will eventually heal, and then, if you don't have the beautiful result that you want at that point, we can usually revise things and recover the beautiful result from there. It may mean an extra step or two we weren't expecting at the beginning, but the bottom line is that we can still achieve the beautiful result. There are as many ways of dressing and managing these wounds as there are surgeons doing tummy tucks, and it sounds to me as though the advice that your surgeon has given you and the things you are doing are all appropriate and will lead to that recovery of the result I'm talking about. The main thing is that you have to stay with the program, don't get discouraged or give up, keep seeing your surgeon weekly as he advises (that's a good surgeon by the way!), and "this too shall pass." The human body has amazing healing properties, and a good surgeon will know how to work that. You just need a little faith and patience at this point, and you'll be just fine. Good luck.
You definitely have a problem. It will not closed by packing and waiting for several months. The depth of the hole indicates there is fat necrosis as well as poor skin circulation. For the sake of all concerned, I would recommend excision of the open area, debridement of dead fat, and secondary closure by your surgeon. This is the fastest and best way to get this healed with a reasonable scar in a short period of time.
Necrosis is simply tissue which has lost its blood supply. This tissue should be removed (debridement). The remaining healthy tissue will grow scar tissue to fill the area. The packing is used to wick away fluid, keep the healthy tissue moist, and encourage healing. This entire process can take many weeks, and sometimes months, to complete, but it should heal. Things that patients can do is to keep the area clean, take Vitamin C and Zinc supplementation, and eat plenty of protein.
This sort of thing is common after a tummy tuck, but will most likely heal in well. However, it might take several months to fully heal.
All the appropriate steps are being taken. This is a known complication of TT. The good news is that this will heal nicely. Make sure you are not smoking and are not around smokers. Take vitamins and eat a healthy balanced diet to optimize your healing.
No one wants to have a complication and have wound healing problems, but unfortunately, they do occur. The risk for this is also higher in smokers.
Treatment of this ultimately depends on the amount of fat necrosis that you have under the skin. If it is confined to a small area, debriding the dead fat and allowing the wound to heal in on its own is reasonable. This can take from a few weeks to a couple of months. If there is a large amount of fat necrosis under the skin, it is better to surgically debride all of it and reclose the wound. If you are early after surgery, your surgeon will treat it conservatively to determine the extent of fat necrosis and how much might heal on its own.
I realize that this is scary to you, but long term, you should end up with a nice result. Often a scar revision can be done 3-6 months after the wound has closed if needed.
Sorry for the postoperative necrosis. But sounds as if you are being treated correctly. I offer additional infusion therapies to the area with PRP + AFSC mix.