I just caught this thread Deb, sorry you are having such a hard time.
I just went through this too. I bottle fed mine every hour and a half and every 2 hours at night until I saw her nursing well. If she did nurse and didn't get a nice round tummy I would supplement also. The nutri drops really helped her, also the benebac. She has finally doubled her birth weight at 2 1/2 weeks.
Hang in there. I know the worry is overwhelming.
Sending a prayer your way.