I'm sorry to here your baby is suffering, as for your question as to which formula, i would suggest asking the pead for a prescription for neocate it is a hypoallergenic formula, and is completely different to the HA formulas that they sell in shops it has no dairy or soy protein in it and is broken down to help with digestion.

Soy formula yes does help with some probably allot of babies but as scarlet mentioned the protein molecules in it are as hard to break down as the ones in dairy and goats formula there for allot of babies with reflux and protein intolerance have trouble with them

I'm glad you bub is doing well on soy Lulu thats great