My Loved One is Always High or Drinking

If your Loved One is always high or drinking, how do you know when to step in with rewards, and when to step away, remove rewards and allow natural consequences when you suspect or see use?
From Pot to Kratom, He’s Always Using Something

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.