Hi waken, and welcome to SR.
I'm sorry for the circumstances that brought you here, but I am glad you found us.
Your father has gone through rehab. He has the tools to stay sober if he has the desire.
Obviously he doesn't have the desire anymore.
Alcohol is cunning, baffling, and powerful.
There are 3 C's to remember:
You didn't cause his alcoholism.
You can't control his alcoholism.
You can't cure his alcoholism.
Please check into Alanon meetings in your area for face-to-face support among those who understand. Alanon was a lifesaver for me.
If any other family members would like to go too, please encourage them to do so.
You father is no longer recovering. He made the conscious decision to drink again.
You have no control over that.
What you do have control over is you, and seeking recovery for yourself. Those of us who have loved an alcoholic have a lot of wounds to heal.
I hope you continue to post, and know you are among friends.