What should I focus on for breast fat grafting?

I am considering breast fat grafting. I am wondering what I should focus on before and after the surgery. In particular, I would like to know about the duration of the results and how to manage post-operative care. I would appreciate advice from those with experience or those who know of good clinics. How long does the recovery usually take? I would also appreciate it if you could let me know if there are any precautions I should take.