Hi, my four month old son mainly sleeps from 9/10- 6/7am it's really great but he's still in the Rock n Play. There's no vibration on and it only rocks if we do it. That's not even the hard part. Naps are really tough unless he is in the stroller or swing he will not continue to sleep. He can fall asleep in the bassinet or. Pack n play but he won't stay asleep.  he is a reflux baby so I have not tried push the issue but now that he's four months I'm getting scared he will never want to sleep anywhere else. Anyone else in the same situation? Or have fixed the situation? Thank you.