I have a ridiculous oversupply. I had it with DS and I have it again with DD. It is more managed this time but it's still pretty crazy. I have had the entire range of issues that come with oversupply and it is also just plain irritating. The overactive letdown means leaking that is way out of normal range (leaks that literally SPRAY through a tank top and soak any breast pad.)
My son was massive. Seriously. I've never seen or heard of another breastfed baby IRL (I've heard of just a couple on here when I went looking) that is as large as him. He outgrew his infant carseat (22lbs) at 4 months of age and weighed 29+ lbs by 9 months of age.
I know that pumping can cause more issues so I haven't done a lot of it but when DS was younger I used to pump some of the "extra" on occasion to donate or for comfort or to freeze "just in case" and could easily get 8 oz in a session, sometimes more like 12. This was just pumping till my breasts were soft like after a nursing session.
DD is sick with RSV and we spent the weekend in the hospital. Due to a decreased appetite and some congestion and mucous, she has been nursing less frequently and for shorter periods of time. Also, I tandem nurse and DS was not at the hospital with us the whole time so between those factors I was feeling somewhat uncomfortable and pumped milk yesterday and today.
I got 25 oz per day over the course of 4 short pumping sessions. This was in addition to DD's nursing (less than usual but today she had a dirty diaper and I think 6 wet ones) and DS (2.5 and a seriously efficient nurser) nursing a few times as well (4ish maybe?)
I had never thought to look up how many ounces a baby would need if they were being exclusively bottlefed pumped milk until tonight when I bagged my pumped milk for the freezer and got to wondering. Apparently the average is 25 oz a day.
So, all this back story is leading to the question: is it possible that my kids really do get more milk than they maybe need? There isn't really such thing as "comfort nursing" in my life although I wear my babies, co-sleep, and nurse on demand. When they have their mouths on the nipple, they are definitely getting milk and likely lots of it, KWIM? If a 5-7 minute pumping session that roughly takes the place of a feeding can easily reap 8 oz of milk and my breasts feel the same afterward as they do after a nursing session, can I safely assume that baby is getting at least approximately that amount in a session? Isn't that kind of a ton for a 6 week old? Could this be the reason that my son was so gigantic? DS nursed till my breasts were completely soft about 8 times a day and nursed many more times for just one letdown each day as well (and I know for a fact that if I catch a letdown without pumping the breast at all it averages 3 oz for me) That could mean he was getting close to 80oz/day!