Has anyone had any success with this? We are in a daily nap battle with obsession over wake windows and avoiding an over or undertired DD (5 months) and i'm sure relaxing about it a bit would help. I also think my understanding of the possum method is a bit simplistic...you just go about your day and baby will sleep when they need to on the go?? I'm just not sure how i wont end up with a grumpy tired baby at the end of the day. If there is more to it than that please enlighten me...TIA x