Dents in forehead after brow lift?

Have a quarter sized flat area between eyes and a 2 inch very noticeable depression above one eye. Surgeon never experienced this after muscle removed. Said to wait til month 3 and he could fix this through fat graft in office (no centrifuge straining the fat through some kind of cloth?). If he says he has never seen this it makes me hesitant that he will be able to fix it smoothly. Derm could do Juv. but upset about expense. Logic in the first place was to get rid of the Botox upkeep cost. Guidance?