Our son is 4 days old, and I'm already worrying about the right place for him to sleep. So far, he stays settled and sleeps the best in the Rock 'n Play, but is it okay for him to sleep in this all the time, including while we're sleeping? Our original plan was to have him sleep in the bassinet in the PNP, but we haven't yet mastered the swaddle and he won't sleep there. He's somewhere between 5 and 6 lbs right now, and even the tiniest of the "easy" swaddling items on the market are too big for him. What has everyone else done? Am I worrying too much about this? (first-time parent here!)