Most of us have been where you are now. We understand and that is why we linger here, to help you.
My sister and I just quit cold turkey. Yes, we have family in, we took all those we could out with us. It was best for us, you must decide for yourself.
Best wishes for you and your family. Let us know what you are thinking.
Many here will tell you to read Steve Hason's book about getting your loved ones out of cults. I second that suggestion. Proceed carefully.