falling asleep for naps

Mexico
My Lo falls asleep great by herself at night and sleeps through. However day time is a whole other story. Unless she is rocked to sleep and then placed in her crib she can't fall asleep! Anyone taught their baby to fall asleep on their own for naps? I've tried the whole "drowsy but awake thing" since she was young. The best I got was her falling asleep on her own for the first nap of the day but none of the others...