There is no substitute for a hands on exam, but I can offer two explanations here. One is that you appear to have a good amount of internal fat around your organs that cannot be addressed by anything other than diet. It limits what can be done surgically. Second is the fact that you are only 7 weeks post-op which is not that long in the scheme of things. Your swelling will continue to go down slowly for up to a year. Even at 6 months you will look much different than you do today. The extra incisions down the midline may prolong the swelling a little, but you are just starting your overall recovery. Be patient.
I do not typically perform the procedure that you had. Usually my incisions are limited to a transverse lower incision or an inverted T incision. At seven weeks postop patients can still have swelling and may see some improvement over the next couple months. More incisions may lead to a more prolonged drainage of excess fluid and it may take longer for your swelling to resolve. Certainly a revision or repeat surgery would not be appropriate for up to six months.