My brother had the same thing happen and had to stay face down for two weeks also. It turned out good for him.
My oldest brother also had a detached retina about 12 years ago and had to do the face-down thing, I think for “only” a week or so. Then my wife had cornea transplants in both eyes a few years ago, and had to look at the ceiling for three days straight. I had to wait another few days to take her home, because of the elevation difference.
Good results for both of them, I’m happy to say. It’s amazing that eye doctors can do so much now. I have had cataract surgery on both eyes, as has my wife, and several other family members have had one form or another of lasik.