Trish, I'm really sorry you and Abbey are going through this

Firstly, get onto a good LC ASAP. As someone else mentioned, there may be something with the roof of her mouth, or a tongue tie that you can't pick up. Whatever the problem/s is/are, a good LC will be able to help you.

Try the bath. It doesn't work for us, but I know it does for most people.

I know you don't want to comp feed her, but I really think you're going to have to in the short term. Abbey needs to get her energy levels up so that she can have a better crack at feeding. Try the cup, or a supply line. I agree that once you introduce a bottle, you may as well kiss BFing goodbye (well, almost).

Express. Hire an electric pump, and use it. It's a PITA, but it will help keep your supply up until Abbey starts feeding well.

As for the Motilium, I take it myself, but I really don't think you need to. Keep it in mind if things don't improve soon, and your supply suffers, but expressing should be enough until Abbey knows how to be hungry.

I would have thought they would be happy to see a weekly gain of 150g, 250g seems a lot to me. Not that's it's too much, but I think it's too much to ask of Abbey.

Hun, I have been there, done that. Your story is so much like mine it's not funny. I was so stubborn, I should have acted before I did, and I regret it now. Nicholas was such a lethargic baby, and as my first, I didn't know any different. The difference in him once he was well-nourished was amazing. I know you will find that with Abbey too And I'm sure you will BF for as long as you want to, I really think you will. Good on you for working so hard at it, it's not easy.

ETA This post took me too long! I've repeated a bit of what others have said, sorry.