We had food allergy issue even when my wife was breastfeeding our son. She had to regulate what she's eating because our son was getting bad reactions from the breastmilk, so we had to leave out all milk products and bunch of different fruits until it was all ok.
Luckily most allergies end when the child grows up.
I'm glad even though that seems difficult you all seem to manage with the diet.
it was the same for ours but my wife was only eating sweet potato and pork and the baby still had reactions. She is not a large woman and her weight dropped until she was almost a skeleton so we had to change to formula.
Well hopefully she's not feeling bad for not being able to breastfeed, as some mothers think it's a great loss when they have to stop - and not only by own decision.