N.C.
When you say your husband is new to the area, is it your son's father or did you remarry? Changes in the household change toddler's behaviours. Is something going on that is different in the house. Does your husband work nights and come home and check on him at that time? If there are any changes, it manifests with behaviour changes, sleep issues etc. because toddlers do not know how to express their frusteration or anger. Something has changed to scare him, find out what it is and address it. Good luck.