We space out the introduction of new foods. I wonder if that's what your Doc was referring to, FarmerMomma? I don't know how that would build up the stomach, though. Maybe help the body recognize foods and produce the proper enzymes? We have food sensitivities in our family, so I allow for 4-7 days before adding another food in case there is a reaction. I've seen reactions as late as 4 days after eating a sensitive food. I do try to get that food in once a day for that trial time.
I have to say that I'm getting tired of having to space things out . . . even though I understand and support the logic of it. I am ready to just mash up whatever we are eating and not have to think and plan out separate baby foods!
Please share your liver pate recipes. I think that would be a good one soon. He's starting to look pale again . . . time to get more iron-rich foods into this kiddo.