I’m trying to practice this method so he doesn’t rely on being rocked or fed to sleep, I’d like for him to be able to fall asleep on his own, he does GREAT at night for his “big sleep” I put him down fully awake and within 3 minutes he’s asleep. For naps however he stays awake and coos & watches the mobile for about 15 minutes before he finally falls asleep. The room is nice and dark, I play white noise and the mobile music. He doesn’t cry or anything just plays 😅 Is that normal? Do your babes do this too?