I’ve been following the diet about 2 months, and it took a month for me to really start to feel better. My symptoms shifted from heartburn to LPR, and it’s quite mild at this point.
I already mostly have raw dairy, and except yoghurt isn’t raw, and I’m lucky to have a local source of raw goat’s milk! But I’d been drinking it off and on for several years, and only developed the g.i. issues since July. I’d also already been eating, for many years, a healthy, moderately low grain, low refined/processed but organic/grassfed diet. So although symptoms were very severe for a couple of months, I think it was due more to a drug reaction than really bad SIBO.