Relapsed and in AA
My Dad was a functional alcoholic most of his life. He worked for the same company for 40+ years. Following a major medical illness that resulted in his sudden retirement, he progressed to an unfunctional alcoholic. He completed rehab and was sober for more than a year. He relapsed around 7 months ago and continues to drink frequently. He attends AA meetings daily and even sponsors someone. I believe his fellow AA friends do not know that he has relapsed. I have talked with him about possibly going back to rehab and he said it's not a good time. I feel like I'm watching him slowly die.
Advise?