We are off the O2! She seems fully recovered, and I am still thinking about punching the NICU nurse who told me that adults don't get RSV... She is correct that we don't generally get brochiolitis, but the cold, sinus infection, etc have me wishing for mechanical suction at home for ME.
So, in case anyone needs to deal with O2 and an older, bigger baby... We learned this after watching my DD trying to wrap the O2 line around her tank next to the crib (new toys!!!) and tying her head to the crib railing in the process. It was pretty funny, but it could have been un-funny easily.
Gymboree makes lightweight footed sleepers with snaps at least up to 18M. Everything else has zippers. This is a problem because you need to route the O2 line out near their feet when they are getting better. The Carter's outlet had two fleece sleepers left that had snaps in her size. These things were pretty easy to find in NB and little baby sizes, and they are really hard to find bigger than 9M. The manager of the Carter's outlet thought I was completely nuts. She might be right. Either way, this worked pretty well.