Hi I am from Roots and Wings, a company providing support to parents and carers in and around the Dulwich area. Our view is that as long as you have boundaries within the wind down time so it doesnt get dragged out then an hour seems like a great length of time, it is not rushed and is a nice gentle wind down. We work with kids and would let them play in the water for 15 mins, have a wash and then get out, drink of milk whilst having stories, 2 or 3 pre stated for the child ( aroutine of the same number every night) and then a clear good night. It has always taken me at least an hour to do the whole routine.