Crazy engorgement at 2months!

RusalkaSings

I introduced a pumping session after DD's first feed of the morning once my supply had regulated, and now I am getting crazy engorged in the morning. DD will only nurse one side, and I'm getting 5 to 7 oz. after she eats. I'm worried I'm creating an oversupply/hindmilk/foremilk issue, as her BMs have turned green in the last week and a half or so, too. But now I need to pump to feel comfortable in addition to building my stash. What can I do?