"...........but he is not willing to give up his habit at any cost.............................................. ............................."

Nothing will work if he Is NOT willing to stop,You cannot force him to stop,this desire to stop drinking alcohol is the FIRST STEP he needs to take on his own.

One of our relatives informed us there are certain holistic or alternative therapies that can help in overcoming such addiction

Yes- see the links I have posted already.....................

My dad has been on alcohol addiction since a long time.............................................. ...............................

Sometimes it takes a life-altering even such as an breakdown of ones health to put a hault on addiction,sometimes even that wont stop an addict.The family always takes the full brunt of the addicts abuse,hang in there!

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"Great ideas often recieve violent opposition from mediocre minds"...................Einstein