Kathy, I am sorry but to make a diagnosis of lactose intolerance on a baby based on giving lactose free formula is weak.  Lactose intolerance in babies is rare and is usually related to one of the positive PKU test results.
Instead of stopping mother's milk, you may want to investigate her milk production and pumping habits.  There may be a higher amount of lactose if she has a large production and the pumping is not getting to the hind milk well.
I'd also insist on a more exact test for this diagnosis.  The down side of this is putting the poor baby through more invasive tests.
Ann Perry, RN IBCLC
Boston, MA

             ***********************************************

To temporarily stop your subscription: set lactnet nomail
To start it again: set lactnet mail (or digest)
To unsubscribe: unsubscribe lactnet
All commands go to [log in to unmask]

The LACTNET mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software together with L-Soft's LSMTP(R)
mailer for lightning fast mail delivery. For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html