We just found out DS (2 months) has FPIES. We also have a older DD (14 months) who is MPI.
Does your whole family eat allergen free? Since DD is still at an age where I can get away with changing her diet without too much trouble I was thinking that DH and I should just change our diet so as DS gets older he doesn't feel left out because his food is different, especially with him being at greater risk of reacting than DD.
Re: For FPIES
Glad you found out early.
my son has a milk/soy/egg/peanut allergy. his soy is the lowest and everything else is pretty high. We keep our entire house milk/egg/peanut free but keep soy around (mainly for me since I'm a vegetarian).
I'm pregnant w/ my second one and we plan on putting all of our kids on the same diet. just easier and no risk to CC.