I came back from a consultation for breast fat grafting, and they were kind and explained things in detail. The director also answered my questions without seeming bothered, looked at my breasts with ultrasound, and told me about how much could be injected.
When I asked by phone, they said a second session using frozen fat was possible, so I came in, but during the in-person consultation, I received a negative answer about this.
However, the price is reasonable and scars can be minimized, so I think it may be okay to do the second session with fresh fat instead of necessarily using frozen fat.