Hi there ~
I understand your concerns for your husband. While using medications to treat severe pain
may be helpful, if not monitored, these medications can be addictive and you might suffer from more pain if you are having withdrawals after you suddenly stop these medications, especially if you are overdosing on them. I hope you can take your husband to a pain specialist and a substance abuse
counselor who can advise you regarding the same and get him on the path of recovery from addiction. I hope this helps.
Take care and have a lovely day!