The places I mentioned didn't really have schedules that matched mine, and their consultations seemed pretty booked up, so I booked consultations at two places, Top Class and Irumi, where the dates and times worked.
As for the materials, after I asked about them last time, I got curious and looked into them a bit myself too. There are differences between donated materials and autologous materials, so I'm planning to consider whichever material the doctor first recommends while looking at my nose during the consultation. I heard donated material is something that gets absorbed well and doesn't work as well as autologous material, and autologous material leaves a scar on the body but gives proper results. But I think this varies from person to person, so I'll decide after the consultations.
I'll go to the consultations as scheduled and see how they go.