I am 6.5 weeks post deep-plane face and neck lift. Will this swelling under chin after necklift go away? (photo)

Performed by a face specialist. The doctor told me that he sewed my platysma muscles together, as well as cut out a large fat pad. I still have a large double chin, and am worried that this will not go away. I know it is early days yet, but I have seen no improvement since day one. Also, if it will not go away on its own, are there any corrective procedures to help recitfy it? Thank you so much for any insight you can offer! Greatly appreciated!