Iv4fer, Please take it real easy on your dad. I have been where you are. I too feel I was the instigator of my family getting so involved with the JWs. I am the only one who woke up and yet I was the one pushing the hardest for them to get more "spiritual", when they were slackers and I was totally into it.
My father used to suffer angina attacks when he and I got into a discussion about it after I left. Yet neither of us could leave it alone. In hindsight I would have taken it a lot easier on him. I would have been patient and selected my subject (not subjects) carefully. The worse thing you can do is dance from subject to subject. You need to pick something and follow it thru to it's logical conclusion. Like prophecy or blood.
I think it's vital now that your father is assured of your love for him. He may be afraid of losing you to "the world". Lots of reasurance and hugs and determination that this won't prove to be a wedge between you. The rest will work out if you use commonsense.
Marilyn
Marilyn