That does sound anxiety producing!

I would verify what they mean by "awake". Conscious sedation with versed and fentanyl or other medications is not uncommon during this procedure. I don't know that most people would hold still for it with nothing!

Call the GI center where it is being done and find out what they use. If it is to be in the doctor's office and they won't give sedation there then you can request to go to an outpatient endoscopy center.

Don't cancel. Get the workup you need with meds. It really shouldn't be a problem.

I hope you get answers soon.