Thanks for your response! Ours both reacted to baby oatmeal after multiple exposures when mixed with breast milk. We cut them completely from my diet (breastfeeding) and noticed a huge different in their overall gas/discomfort and stooling. Our eldest outgrew it by 20 months (accidents exposure - a yogurt product we had aways purchased added oat cereal to it, didn’t change the label much (a tiny picture of a few oats in the corner) and I didn’t notice until she had eaten all of it.
We are fairly certain it was oats since the reactions happened with baby oatmeal and when I cut all oat products their digestion improved. But with fPIES it can be so hard to tell - especially with how our food is made and how much is cross contaminated and how fields are rotated etc.
we are keeping our fingers crossed that this one is FPIES free. Good luck with your little one! It is SO hard and I agree - when something is a staple in your home (oats were for us!) it is so difficult to have to limit your family diet OR worry constantly about someone accidentally dropping some or sharing etc. sounds like you are very diligent with Home testing! I may be back here to ask more about that!!