Any tips for getting a 6 month old to sleep in her pack and play for naps? She currently sleeps in her rock n play at daycare or my arms when I'm home. However she is starting to roll in her sleep so I'd like to get her out of the rock n play. I've tried doing the same routine we do at bedtime but as soon as her butt hits the pack n play mattress she wakes up and won't go back to sleep. I did get a thicker mattress for the pack n play and I should add that she sleeps fine in the pack n play at night when we travel. I've also tried napping in the crib and it's the same issue - sleeps fine at night but not for naps.