My baby is only 12 days old.. I'm trying to have him sleep in the mini pack n play next to my bed at night but he doesn't sleep well in it. He wakes up a lot during the night when in it. For the last couple nights I have let him sleep in bed next to me so I can actually get some sleep and he sleeps great next to me. Not sure what to do, don't want him getting used to sleeping in bed with me. Any advice?