MORO startle reflex

Ann

does anyone else’s little one have Moro reflex. the startle reflex? my guy won’t sleep on his back as it wakes him up screaming and he won’t fall back to sleep. he doesn’t do it and sleeps thru the night if he sleeps on me. the dr said it was ok as he is getting sleep and so am i and it’s on the couch and safe. just sucks as i go back to work next week and he HATES to be swaddled. just looking for advice how to get him to sleep on his own.