- Dad, do you really think I am mature enough to make such an important decision as dedicating my life to Jehovah?
- Of course you are!
- So you really respect my decision and support me when I would be treated badly for it, for example at school?
- Yes! Your mother and I are verry happy you're geting baptised! We'll always be there for you!
- I am very glad that you think I am mature enough for this kind of decisions. And that you respect my decision and support me no mater what. Thing is, I decided that I can't get baptised this convention. Or anytime before I'm 18. Please show you respect my mature decision, and support me no matter what. Don't pressure me. Thanks. I love you.
Of course, this is the model presentation you can adapt to your situation. And it might not go like this at all. But talk to your parents. Many times, one of them is more sensitive for the emotions of the children; talk to that parent first.
Don't fight them (back). Don't shout (back). But be firm.
What you do or say when some guys try to pressure you into smoking? What would you do or say when a guy tried to pressure you into having sex with him? Watchtower Corp. is about to rape your mind. Your parents don't know what you know, and they are about to help Watchtower Corp. Politely, but firmly tell them to stand down.
Please talk to some counselor not related to the cult, like at school or something. There is a reason you're out here asking internet strangers for help. You need help. And since we don't know you or your parents in person, there not much we can do than shout DON'T DO IT!
Whatever your decision and actions, we're here for you. Own your own mind; you are more free at your age than most of us at 35.
Stay strong.