Hi, I hope Nimbus is still improving.
Merlin became blind in one eye since June this year. Maybe a bit longer, but he probably crashed in a wall because his head is hanging on the side andhe hasn't been flying since. He lost much weight at the same time, went down to 32g and I thought he was going to pass rapidly, but he is still around and gaining little weigh again...
I had to move him to a sick-cage to avoid our female harrassing him. I placed a towel over the bottom of his cage in a trampoline fashion so he doesn't hurt himself when he falls, which happens less and less. He has become very good at navigating on branches and between cages on ropes.
Took him about 6 to 8 weeks but he was also in poor shape after he crashed (?) his head and lost weigh. On the other hand he still has one eye fonctionning, and he is not alone so he is stimulated to move around, both to be with her and to avoid her when she is pestering him. So his situation is probably quite different from yours.