Debbie:  First, congrats and good luck on next delivery.  Second, it is
completely normal for one breast to having substantially higher output than
the other; although I might add that a breast pump is not a good way to
measure the true capacity of the breast (see Hartman's work on capacity
measurement).  There are many women in other cultures who exclusively bf
from one breast.

One question...why is the mom pumping for a 15 mo old?  Unless she is away
overnight or for very extended days, it is unusual to need to pump at this
stage even for moms who are employeed full time outside the home.  Many a
mom employed outside has reported that their breasts will adapt to their
work and nursing schedule such that they feel let down only once they drive
up the drive way.   Their milk production becomes reduced while at work and
increases dramatically while at home or with baby.  It may take some
tapering, but she might try just using unrestricted nursing while with baby
and not pumping if it is making her anxious.

Chris Hafner-Eaton, PhD, MPH, CHES, IBCLC    [log in to unmask]
mom, wife, educator, lactation consultant, researcher, scientist, author,
organic gardener, photographer, lapidary creator, lousy cleaner.

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