Growing up so fast

My little boy is already 18 days old. I can't believe it. Especially since tomorrow is my actual due date. He is still being good, although three nights in a row now I have been up until 4. usually from about 1-4 am. It just seems I am not making enough milk for him. First of all he eats 24/7. He will nurse for over an hour until I have nothing left and still be starving. So then I have to give him a bottle of breast milk anyway to top him off. He nurses fine, but I think he prefers the bottle because he gets more, faster. He is always way less fussy after eating from a bottle rather than nursing. So I guess it is not a big deal either way, it is still my milk. I am trying to get a supply built up in the freezer for when I go back to work, unfortunately that has been hard to do when he drinks every possible drop I can get out. He easily sucks down a 4 oz bottle. What am I going to do when he eats more than that at a time? It is frustrating, but I will not give up on nursing. It is the best thing for him.
He is starting to develop more of his own special things each day. He smiles alot, although the Dr would say it is probably gas, I believe he is smiling at me. He will turn his head to look at us when we talk to him too. He is quite the charecter.Also he is starting to sleep less and be awake more.
Well tonight is bath time. I love bath time because he likes bath time. His cord fell off Wednesday so I was all excited to have tub time tonight because I know he will really like that. But John wants to wait longer so that we can keep his belly button dry to ensure that no infections or anything happen. I am bummed. I hope I can convince him to let me by Sunday night. Well I had better go try to pump out another ounce or so. It seems to be a never ending battle to get enough milk for him. What can I say, the boy has the Beymer kids genes, he likes to eat and will probably be a chunky baby soon. TTFN!