Christine,
There is ample evidence that human milk will benefit this baby in the
new Riordan and Auerbach edition "Breastfeeding and Human Lactation".
Look in the section about human milk banking.  It seems to me that if
the baby can tolerate an infant formula, this should be replaced by a
superior product that is readily available from within this family.

Good luck.
--
Jeanne Mitchell
Austin, TX
"Be kind, for everyone you meet is fighting a harder battle."
Plato