Liposuction and Abdominal Etching Done with Smart Lipo?

I had liposuction done on my upper and lower abdomen as well as abdominal etching with smart lipo triplex. I am two months out and my serratus and first two rows of abs are visible. 1, Are the lower abs and linea alba the last thing to show? I have a lot of scarring where last row of abs should be, dr says if in 3 months it has not improved he will inject area with steroid to break up scar tissue, is this effective? I have been massaging VERY aggressively, has been of marginal help.