You are getting advice from well meaning that will ensure that you end up divorced. You aren't likely to save your relationship with this advice.
The problem is with drug/alcohol use .... even after the use ends....it isn't that simple. A lot went on. A lot still goes on....and YOU might not have the best eyes to see what went on. Do the work of DBing this relationship. Go through the steps. THEN you will be a better you....you will have a shot at repairing your family. It won't be easy......it will be long and hard. But then if it doesn't work....you will be in much better shape for another relationship.
If it does end and you move on....you will still have to do this work....or the next relationship will have a great chance of going down a similar path.
sg Love is PATIENT, love is KIND, LOVE never fails / DB since 2001