As far as increasing feedings at night and lower supply during the day - (ETA: agree about the catching up part). Also, my LO has recently begun reverse cycling. He nurses quite a bit through the evening and night and AM, but while I am working, or during working hours, his intake is much less. Its his way of adjusting to the fact that he would rather nurse from me than from a bottle at DC.
when you have bad pump days, try turning off the pump, then wait a few min and try again. Massage ducts in breast while pumping, think of your baby, pump for 5 min after you are "done" pumping. Make sure you are getting good nutrition and you are taking care of yourself because stress causes dips in supply. Most of my dips I was diligent about all the kellymom.com suggestions for keeping a good pumping supply, and I was able to make up for them on my good days. SO I might have one week of 16 oz and then the next week would be a 12 oz week. Frustrating, but be confident in your body. If you are a few oz short, don't stress, nurse as soon as you get to DC to pick her up and her demand will make your body respond.
~ Professor Mama to Gabito (July '07) & Danita (April '10) ~
A PhD = + +