That's kinda what I've been doing... I started with the turkey, squash, and rice that he suggested, tho I didn't eat any turkey b/c I didn't have any and b/c the only turkey you can get in the store here has broth in it that probably has soy, but almost definitely has some form of MSG. I saw improvement after only 3 days and really felt I needed to add in more nutritious foods... my supply had lowered a bit and I was getting *really* sick of rice. Rather than add one or two foods every 4 days as Dr. Sears suggests, I decided to just go for it and add in everything except the common allergens, plus citrus, tomato, and chemicals (such as MSG, etc.) So now I eat everything except corn, soy, dairy, wheat, egg, nuts, citrus/tomato and chemicals. I tried to introduce egg yesterday and we had an awful night, so I won't be eating that again anytime soon...
FWIW, if your daughter's poo went from green to yellow, imo you're *definitely* on the right track, even if it's still a bit watery. I think both my kids had watery poo, and while Milo may have some intolerances, Ellen never did.