What does my doctor mean by "remodeling" after the initial fat establishment stage post fat grafting to breasts?

My doctor says that the remodeling phase of fat transfer takes place for up to 18 months post fat grafting. I have a lot of scar tissue from prior implants, cc and then explantation. I am still experiencing some animation deformity. He says could improve during this remodeling phase as scar tissue might be reduced. Is this true? 10 weeks PO. 300cc fat transfered to each breast. Good retention. Muscle was replaced to anatomical position via strattice during a previous surgery.