Hi,
Yes, motherhood is a series of transitions. It sounds like you are doing great...to increase/keep your supply up,,try pumping after feeds and pumping once during the night. Your natural prolactin level increases at night. If you find the extra pumpings to be too much,,don't sweat it..not only are you probably making more milk than you think,,he is getting all the nurturing at the breast..breastfeeding is more than milk.
Enjoy your nursing relationship...take care, Cathy