I really like the pulmonologist, and she knows our home pulm very well. They are similar in approach and I appreciate her caution. She just doesn't think Abby is quite ready to wean all day yet and that she just needs a little more time.
After going back on her bipap, Abby fell asleep for several hours--a very deep sleep! It was obvious that she needed the "lung break," as we have started calling it.
So we will just keep plugging away at the weaning and praying that she can make it all day soon. Once she goes all day for 2 days, we can come home. We will get there.