M.M.
I agree that Dr. Harvey Karp is the baby whisperer. Some babies are content with swaddling, others need other elements or "S"s added to get them settled. My daughter needed, swaddled, sucking, and put on her side and she would immediately fall asleep. Until you get the video swaddle him, add a bink, gently sush in his ear as you rock him while holding him on his side. See if this works.