My doc insisted that you will get an average of 70-80% of follies at AFC to produce eggs. I obviously proved him wrong.
He was very shocked. Dont get too discouraged. It really is trial and error. My first cancelled IVF I had 3 AFC and 1 follie. Successful cycle it was AFC of 2 and 3 follies. Some women swing widely each month, but I was very predictable with 2-5 always.