You have already had treatment elsewhere. The visit reads that file before suggesting what to repeat.
A second opinion is a reading of what already happened, not a promise of a different result. The useful visit has the previous file in the room.
Bring the cycle record
Stimulation doses and days, number of eggs, fertilization method, embryo development, freezing notes, and transfer details. Semen analyses and uterine imaging help too. Without them, the consultation can still start, and the missing pages are requested before a new plan is fixed.
What you should hear
Which part of the previous cycle is worth repeating, which part is worth changing, and which extra test would actually alter the next step. Cost and timing are discussed after that reading, not before.