Remember that they are not cynical about God--yet.
Help them emphasize the true nature of faith and and what that means. That will be the best insurance against an early baptism and the growth of religious hypocrisy in them. And is JW hypocrisy that will separate you from your children one way or another: You don't want your kids to become like that or they are lost to God AND you.
You think you have to go preach at them to do this? No. It is just conversational stuff--Just ask them why the Catholic church annuls marriages between babies. (They do) Let them run with this wherever they want --They will have a field day--It'll allow them to explore every thing from legalisms and maybe---on their own--they will ask this obvious question:
If the Catholic Church will annul a baby marriage, why do they baptise a person when they are a baby?
Let them explore thoroughly first one thing before you answer. (They probably have already figured out the reason for annuling infant marriage,i.e.the parties were not able to commit with reason and awareness to the responsibilities of marriage.)You want to make sure they grasp the importance of reason and awareness. Because the you are going to drop a good germ into the JW doctrine-world from a powerful access point. Reasonabe faith.
Faith with reason--Have them look up Romans 12:1,2 and read it. That is what dedication to God means.
* Ask them where there is a heavier level of responsibility involved-- in marriage or in baptism?
* Ask them if Romans 12 indicates that an individual would have to have a powerful and personal knowledge of God to make this commitment. Explore the scenarios that would threaten or challenge that individual's dedication. Let them see how it has challenged you and others they know--(Careful this can be sticky--It is tempting to jump in and show them examples of the blatant hypocrisy that comes as a result of JW "social" baptism
* Let them see how the Society even recognizes the need --the requirement--for individuals to make a personal dedication to Jehovah before they are baptised. ( Don't mention it now, but later if they yield to pressure to get dipped, remind them that the questions they have to answer at the dipping will be to be: about service to God and in association with his "Spirit Directed Org.) Remind them that their dedication means to listen to God no matter what anyone else tells them-including the Org)
What results from the baptism of individuals who do not know what it means to serve God ---for life?
Won't individuals who get baptised for reasons other than faith and love of God corrupt the brotherhood?
What resulted in Jesus' time when he faced fellow Jews who wer very religious an ceremonially pere but lacked genuine love of God?
Don't let the JW schtick get in the way--if your kids start to respond in JW speak gently reel them back into Jesus more simple and reasonable world: John 6:29,"The work of God is this: to believe on the one he has sent."
Encourage them to find the freedom to believe-, to not ever be afraid to think and learn and ask questions like Abrahm did of God.( Faithful Abraham really got into borderline disrespect--like we do on this board. But that is how you do with friends)--just like the courtship that should lead to a long and happy marriage!
You see where this can go.
They will love to talk to you.
How do I know that this works? I got to be a JW after I had five children and dragged my family through the mess of all that--My husband's strong resistence required a lot of dialog and reason that JWspeak couldn't overcome and I knew that real faith had to be the chief ingredient for Baptism. Two kids got baptised and are now out but it was my youngest that showed me how good it is to do lay the real truth out before them--She faced down two elders on a shepherding call when thay wanted to know why she --at13--wasn't covering the baptism questions since she knew all she knew. She told them that she didnt have a relationship with God that would allow her to make a dedication and that was more important than baptism.
Don't be cynical about God with them. If there is a God --he will be working with you to keep these kids out of the Org.