I am trying to have all shipped eggs here at the same time. If one set arrives early can I set them in the turner and add the next set the next day and just adjust day eighteen between the two? Or something like that? Say day 18 and 1/2 for the first and 17 1/2 for the eggs added after. I do not have a hatcher . What is IBW mean? I feel like I am missing out on a big secret!!!