My lo fights sleep. I know she's tired, eye rubbing grisly etc but it can still take up to an hour for her to go. I must be missing the 'window' but I've tried so many times I can't have got it wrong EVERY time!
I don't want to let her up because I want her to know crib means sleep but it's ridiculous. She's not usually unhappy in there just not asleep.
How long do you leave before giving up?