12 days old nights and days mixed up.

Mallory
Do babies have any sort of schedule this early?  I just brought my son home from the NICU Saturday as he was a preemie born at 33w and it seems like our nights and days are mixed up. He slept like a champ all day and then last night and tonight wants to be awake and feeding nearly every hour even though the nicu had him on a very strict every 3 hour feeding schedule. Is there a way to get on the right track?  Am I terrible if I just let him sleep in the mamaroo for my own sanity?  He spits the pacifier out and can't get it back in himself and screams. Part of me thinks the only solution is to strap it to his face like bane's mask in Batman (obviously I won't).