Treatment for Fat Necrosis After Tummy Tuck?

Your experience with delayed healing is not uncommon after "tummy tuck" (abdominoplasty").  The good news is that your surgeon is tending to your problem and that you will eventually heal completely.  It is good that you are not a smoker as that can definitely delay healing and even exposure to second-hand smoke can be a problem.

Regarding the choice of wound care, there are many options.  The basic principles include wound cleansing as with washing and dressings to help debride the wound (remove dead tissue) and protection from infection and drying with more of a closed than open type dressing regimen.  Your surgeon's suggestions sound good to me.  You should follow-up regularly while he/she monitors your progress and adjusts the regimen as indicated based on the wound changes.

Good luck and stay positive.

Each surgeon treats their wound healing issue in their own manner. Best to follow your chosen surgeon's plan, unless you are not improving. Than a second opinion. 

Thanks for you inquiry.  Fat necrosis and wound problems are common at the t-junction of a combination vertical-horizontal abdominoplasty.  I prefer dry wounds and dressings but the most important advice I can give you is that follow your surgeon's instructions.  We each have reasons for our woundcare which allow to reliably achieve proven results.  Good luck.