horrible night sleeper

Nighttime however is horrible! He nurses almost every hour (the only way I can get him to fall asleep aside from carrying him) and still has the worst startle reflex that wakes him up constantly. My little guy only sleeps swaddled but recently learned how to escape and wakes up crying every time his arms come loose. We bought the Merlin sleep suit and well, he's still awake staring at me with no problems reaching and clawing his own face. We've tried halo sacks as well and he just screams in the those from the restrictions. I'm at a loss at this point. 

He's not hungry just using me as a self soother, he's obviously exhausted, yet he won't sleep more than an hours time. We've tried less naps, more naps, longer stretches between naps. You name it! Nothing works. HELP!!!