You can let your baby decide how often and how long she wants to breastfeed. Babies nurse for comfort and security as well as for food, and it is completely normal that she pacifies at your breast. The more suckling she does, the more milk you will have for her. It is OK at this point to let her sleep as long as she will at night and not wake her up; as you said, she is unlikely to sleep much longer that 4-5 hours at a stretch, and that happens not more than once in a 24 hour period. If you wake up sooner than she does in the morning and feel very full and ready to breastfeed, then go ahead and wake her up. I do not think that one longer period of sleep should reducde your milk supply. If she starts going for even longer periods without waking, than you might consider waking her to feed before you fall asleep for the night. I would continue to be sure she feeds at least 8 times per day, and once you return to work, pump enough so that you are either feeding or pumping at least 8 times a day to keep your full milk supply. If you do notice a drop in your supply, then all you have to do is 