Why is my bellybutton so flat/unnatural after TT? Options? (photos)

Hello! I had a drainless tummy tuck about 8 months ago. I’m happy with everything except my bellybutton. I guess I just never envisioned such a flat bellybutton without any depth. My surgeon insists that it cannot have any depth because I have no fat. Is this true or should I seek a second opinion? I guess I’m not understanding what produced this kind of outcome. I had an innie prior. I’d love any opinions on what I should do or if this is my final outcome that I need to make peace with.