Hi. There isn't much I can add to what Barb said. But if there is an issue with your supply you could try the lactation cookies (there is a thread on these) to boost your supply. Also, my sister had some issues with supply and was advised by an ABA person to feed 5 mins a side then on the 4th time feed as long as need. (eg. 5mins left, 5 mins right, 5 mins left and feed as long as bubs wanted on right). I'm not sure, but perhaps this could help also.

You're doing a great job, expressing is hard work. I had to do this for DD when she was in SCN. I hope things improve for you. Congratulations also on you precious baby.