My son has reflux and hates sleeping flat on his back in his bassinet. He will only stay asleep for at most 20 minutes. I was talking with my lactation consultant about it and she recommended having him sleep in a rock n play so he is at an incline. I worry that the rock n play is too inclined as the butt of it sits really low. Anyone have their little one sleep in a rock n play or have experience with this? I thought about putting blankets under the butt but am just un sure. It is a fisher price rock n play.