You also need to plant the influence of ANTIWITNESSING in your kids. Why believing "God" (the WT) will fulfil any current version of truth, is no more likely than all the crap in the past.
Give your kids good science books to read on evolution, the universe, encourage wide ranging interests they really ENJOY, like school sports, and other great weekend activities.
If they realise all this will be throttled out of them by the cult they will run, not walk.