BG and Baby Development

Have agree with everyone else, step away from the baby book
Honestly the will do things in their own time and what type of nappy they have on will not make a difference, DS was in disposibles and DD in cloth full time from around a week old and they've both done everything and more or less exactly the same time.

Rufus always did things first when he was having nappy off time, but within a week or so he was doing it with the nappy on, whether it be rolling, sitting whatever.

In my antenatal group of 8 babies we are the only cloth users, Rufus is the 2nd youngest, he was the last to roll over but the 1st to sit-up, 3rd to crawl, 1st to stand unaided and we are still waiting for walking, 4 so far are walking... I don't think it has anything to do with cloth at all.