When I put my 5 month old son to sleep, I turn on the white noise player and give him a security blankie with a teddy bear.
He is playing with the teddy bear and / or sucking it and falling asleep 10-15-20 minutes later.
I'm happy with it, but I'm wondering if I'm creating a bad habit. Maybe later when he becomes more mobile it may become difficult for him to fall asleep.