Can you solve this puzzle?

i would try feremnted soy only, and try garbanzo beans maybe?in hummus? My kids love veggies or apples dipped in hummus. And hummus has protein, good fats, and calcium and
trace minerals

my basic recipe, if you want it

two cans organic garbanzo beans. drain one can only. I use a blender or food processor.
juice of two lemons
tiny bit of cumin
couple cloves garlic
bit of salt
bit of paprika
a few tablespoons of sesame tahini
olive oil(enough to make it blend well ( I like alot)

you can customize it many ways. One way to make it sweeter is to add roasted bll peppers. or roasted grlic.

I think there is more going on here. Like leaky gut causing all those food allergies and aversions. Food aversions are very common in gut damaged/allergic kiddos.

How is he intolerant to milk? Could it be the lactose or is it the milk proteins? My DS can only do goat's milk yogurt, he's intolerant to the proteins *and* the lactose. (Yogurt predigests the proteins and goat's milk proteins are smaller than cow casein micelles).

And it's highly likely has has nutritional deficiencies given his pickiness that are not helping this situation either. Catch-22 I know, we are dealing with it in our house too.

Soy has phytates that binds to minerals as well and prevents their utilization by the body, even fermented is not good to eat regularly.

Rice protein powder might be a good stopgap measure. I do not feel that processed foods are ever healthy, stuff in a can is never as good as fresh.

Look into leaky gut and using digestive enzymes and probiotics.