Liquid O2

Hi everyone! I'm an AlphaOne and I'm looking for answers.
I did a search on Liquid O2 as my pulm. Dr thought that it might be a better solution than the 20# O2 concentrator carried in a baby stroller.
I'm on 24/7 high-flow w 2L at night up to 7L for working on the elliptical. I'm in good shape aside from my lungs.

What's the latest?
Thanks!!