Hi Rebecca,
Looking at Lenore's protocol, you shouldn't go off the domperidone until your full milk supply comes in, and that will not be until after your baby arrives.
You may want to check the book, "the nursing mothers companion" out of your local libary. It has an appendix that tells you how much milk your baby should get in the first five days, and then provides a formula and table to tell you how much like the baby should get based upon weight.
You are doing fantastic with your milk supply, but according to the table, you are pretty far from being able to provide fully for your baby right now.
I have trouble remembering to take the domperidone too, now I take it when I pump, I also take the fengreek and blessed thisle at the same time, and drink a bottle of water while pumping. That seems to work for me.
Cheers, Jean