If I suspect anything dangerous then I will stop it.
It is dangerous by design: Watchtower actually has a scrubbed-up "public" edition for proselytizing and an internal "study" edition they use at the meetings with threatening Armageddon horror stories.
Click this topic on Watchtower's Armageddon illustrations to get an idea of how your children will be terrorized into "serving Jehovah."
See all those people dying or about to die? That's you and your wife and your extended families, neighbors, co-workers, anyone including children who doesn't serve Jehovah. In six years, how come your "friends" never told you this? Because you'd think they were batshit crazy and keep your precious children away.
Sending children to the Kingdom Hall is like feeding them into the bloody maw of a giant sausage making machine. Ground minds and shredded lives come out the other end. Have your "friends" told you about the many suicides, wrecked marriages, alienated relatives, stunted schooling, alcohol dependence and/or PTSD yet? Why not? It's all Satan's fault, you know. Besides, Jehovah will fix everything after Armageddon.
Please be warned: Once your children are old enough to understand the emotional abuse they were exposed to, they may never forgive you. It can take years to address the phobias these "friends" will have implanted in their delicate little brains.