Nursing/Pumping

Hello all nursing/pumping new mama’s out there to your Dec. 2018 babies!!

Question : So I am right now only pumping once a day both breast at same time (not the same time daily) getting about 4 ounces out of each side (total 8 ounces) after 15 minutes of pumping. So my question is...

When I feed my baby who is now 3 weeks old as 1/7/18, he nurses on one side 15 minutes then the other side 15 minutes (only because that’s what they told me while I was in the hospital) is he getting about 4 ounces out of each side when I’m nursing him for 15 minutes on each breast?! 😳 if so that’s wayyy too much for this little guy to have at so young and I should only nurse 15 minutes at a time on one side only, am I right?!