Jay, am catching up on posts. Haven't seen anyone reply to your query. . .
There are sections in Lawrence  and in Riordan and Auerbach on bfing a
baby with CF. Let me know if you do not have access to these texts. I
will be happy to email the info. to you.
Sorry if this is redundant.
Ellen, LLLL, Pittsburgh
(that's my husband's email address)