When your loved one is using drugs almost continuously, there are few opportunities to reward non-use. You are right about this. You are also correct in not rewarding moments of withdrawal, that period you describe when your son first gets up and is agitated and verbally abusive.
Unsure of how to implement the CRAFT method with your opiate user? We explain how to use rewards and stepping away, even when "non-use" doesn't seem to exist.