Which change first?

From what I've seen on these boards, it seems to be a general consensus that when you're making dietary or lifestyle changes it is best to make one at a time.  I'm definitely cutting out alcohol (boo!) but I'm trying to decide what comes next:  cutting out dairy or adding probiotics.  Does anyone have experience or recommendations one way or another?

Thanks!

Because i am on a flare up i have cut out dairy and basically all whole grains and raw vegetables, and hardest of all i completely cut out all caffeine, all of this at the direction of a dietician and my doctor. So far ive been feeling pretty good but since its my reading week in a moment of weakness i went out drinking on the weekend and it had absolutely no negative effects at all. The only only advice i can give on changing diet and lifestyle is finding out exactly what effects you and then working from there, as far as i can tell everyone reacts different to different things. So far ive found my biggest problem is caffeine, within minutes of drinking a coffee i can feel negative effects however i drank a fairly significant amount of rum the other night just with fruit juice, felt great drinking it and in no way worse then normal the next couple days :)

'm doing the specific carbohydrate diet right now.  It seems to be working.  I feel a lot better, but still have some d and cramping right now