How long did it take to see an improvement once you cut out the dairy or soy? My friend cut it out a few days and no improvement yet . . . I think she's getting a little desperate.

TTC #2: BFP 12/17/11, m/c 1/7/12 and D&C 1/12/12
baby blog/cooking blog

Re: f/u to dairy/soy free post - how long to see a difference?
Has she cut out absolutely all dairy/soy, even minimal amounts? I learned the hard way that even very small amounts caused a reaction, so I had to be vigilant about reading labels.
Does the baby have symptoms other than colic/fussiness? Are there GI issues?
She could try eliminating all of the "top 8" allergens for a week and see what happens, but it's really hard. The only other thing I cut out was nuts, because I'd noticed a reaction after eating Nutella, but it turned out nuts were fine and he was reacting to the milk in the nutella.
it might take upto 2 weeks, it's a very difficult process, I've been there, it's hard
TTC #2: BFP 12/17/11, m/c 1/7/12 and D&C 1/12/12
baby blog/cooking blog

I did soy/dairy/nuts/seafood and random other things (tomatoes, citrus, etc.) for DD1. I saw some improvement within a week or two but the most was by four weeks. I cut out all soy/dairy, even hidden. I meant to post on your post below, but she should look for kosher foods - they are usually dairy-free or clearly state they have dairy. I didn't do eggs or gluten because I saw an improvement, but it could be one of those.
ETA: I forgot to mention that I'm lactose intolerant, so I don't eat dairy as a rule and I use the Daiya brand of cheese. Definitely not as good as the real thing, but works for grilled cheese, quesadiallas, etc. I pretty much dislike all the soy products (milk, cheese, etc.) so I use coconut milk, coconut milk ice cream, almond milk yogurt (becase it's cheaper than coconut milk yogurt), Daiya cheese and Earth's Balance spread/"butter".