For increasing weight gain I would suggest Dr. Newman's breast
compression while the baby is at the breast.  The other approach to this
would be expressing milk after each nursing to build the supply and then
separating the milk and cream.  The baby could be fed the higher fat
portion of the EBM either by spoon, dropper or cup or with a lactation
aid at the breast.

The new Lactation Consultant Series Two from LLL starts with a pamphlet
called The Hospitalized Nursing Baby by Barbara Propper.  Although it
doesn't deal with the stress of breastfeeding vs. bottlefeeding (I
remember reading this too but can't but my hand on the reference right
now) there are lots of tips in the pamphlet about the many issues that
arise when a baby is ill.  I am sure that both you and the family would
find it helpful.

Hope this helps.

Sarah

Sarah Friend Barnett   LLLL, IBCLC
Bronx (New York City), NY  -  [log in to unmask]
" You are not obliged to finish the task,
 neither are you free to neglect it."       R. Tarfon