Night time feeding

LO will not go down in his bassinet! We’ve nurses on demand, swaddled, diaper is clean, used all but one of the five S’s (sucking- can’t use a pacifier per LC advise until we get BF down). Any advice? I just had him on my breast for 80 minutes. Put him down and he started crying like crazy after 15-20 mins in his bassinet. His temperature is fine. Husband is heating up a bottle of breastmilk now to back fill him. It’s the only thing that worked two nights ago.