I have done some investigating on this forum, and think I may have found my answer, but I am not 100% confident. I really want to be sure that I have a handle on the reintro process since this Whole30 adventure has been TOUGH and I don't want to waste the work I have already put in. Please forgive my need for hand-holding! Here's how I understand it:
Say you reintro dairy on day one, then you eliminate it again on day 2 and 3.
Then say on day 4 you reintro legumes, and then eliminate legumes and dairy and everything else Whole30 on day 5 and 6
Then say you reintro