I think if you want to really kick it along you have a cup half and hour apart, but only 3 max (or something like that - check the box), or maybe one every 2 hours after the initial 3.

Now I think about it, shopping had a big part. With #2 I REFUSED to give birth until I found the perfect outfit to deliver in (2 days before EDD). Which I did, came home to the Rasberry Leaf and the rest is history.
With #3 I REFUSED to give birth until I had a new couch, I searched everywhere found the perfect one (3 weeks before edd), finalised my business before mat leave. Dah, dah, Elizabeth arrived about 12 hours after I bought the couch. We were home before the couch was.....