It sounds like little Paul is off to a good start despite being delivered early. I would take that as a sign that he is a strong baby even if he's tiny now. My husband was born early in 1959 and now he is 6'1"!! Kudos to you for pumping your breastmilk even though you have so much to deal with. You are a very dedicated mommy!! The breastmilk will be so good for him and no one else can give him that but you. Just remember to keep up with your nutrition, even if you don't feel like putting anything in your mouth.....do it for him.
I remember hearing Melissa Gilbert Boxlietner (Little House on the Prairie) speak about her experiences w/ her premie. She is a strong advocate for something called "Kangaroo Therapy". Mom or Dad hold the premie, skin to skin on their chest and are wrapped in a blanket together. I'll try to find more info on it for you and post it later.
Best wishes to your family and when you have the time, do keep us updated on Paul's progress.