1 month post bbl. Am I still at risk for losing volume in my butt?

I am one month post a bbl. I have lost a lot of volume already and am really disappointed in my results. (I'm not blaming my docotor)I am not sure why so much of the fat has not survived. I am worried because my butt is already so small and It's only been a month. Am I at risk for losing MORE volume since I'm only 1 month post ? What Can/should I do to prevent any more fat from dying ? When should I expect the final results ?