Amber,
I'm so glad she's gaining!! Good for you. Whatever you're doing must be working, but don't forget the basics and make sure you get enough protein, water and rest (good luck with the last one).
I had supply issues as a Working and Pumping mom. Unfortunately DD1 was dairy intolerant so I wound up eating Oatmeal for breakfast most days, which is supposed to be good for supply. I don't think the Oatmeal hurt but when I had DD2, who doesn't have the dairy issues, I found pumping at work became much easier when I was able to have an egg and cheese sandwich in the morning. I don't think it's the dairy so much as it is the protein that's helping.
Also, it sounds like you've discovered the benefits of co-sleeping. It maximizes your sleep while giving the baby unlimited access to the "Milk Bar" I have heard that babies that sleep with their Moms gain weight better, for some hormonal reason that I didn't fully understand but seemed to make sense.
Keep up the good work.
~Cath