Clarella I couldn't tell you what he was like with meds and eating dairy as I quit dairy at the same time he started meds.
With our family history I knew ultimately it was going to be CMPI so bit the bullet and just quit. Also he was so wee (7 weeks and under 8lb) and suffering so bad
- coughing up blood, choking, stopping breathing - I just did EVERYTHING that I knew might help asap. His symptoms were too bad to try to phase in diet changes then medication to see if he could cope with only one course of treatment.
You need 6 weeks to be dairy free as it takes that long to leave your and their body. We saw an immediate improvement as soon as he'd started meds and a gradual improvement as dairy and soy left our systems. After six weeks he was a different child. We've never had any nappy symptoms so don't view that as definitive.
Today symptoms return if we miss a dose or if I accidentally eat dairy (usually courtesy of ignorant waiting staff who assume you're just being faddy and assure you something is dairy free when actually they don't know) so I know J at least still needs both diet exclusion and meds. Our doc advised that reflux meds wouldn't work for CMPI without elimination from my diet.