Advice off the internet is not very reliable. Unless you are trying to voice your own feelings and instincts. Growing up a Witness, I was not entitled to opinions. Today, I tend to conduct public opinion polls even when my gut has already decided. Twelve Step groups believe in a God or Higher Power. Leave him to his Higher Power. Maybe his Higher Power will lead him out. Now is the time to walk out if you don't want the Witnesses. Nothing is going to magically happen if you don't do anything. Not deciding is a decision.
Enough about him. What about you? What is your religion, if any? What are your hopes, dreams or ambitions? What are your values?