I would try to find out what is drawing them to the JW's and address that. If appropriate, I would tell anyone through my studies you find falsehoods/untruths, changes, coverups in all religions. What matters is what they do about it. And most important, as a baptized JW, for whatever reason, if they question or change their mind about anything, they will be shunned and expelled. Friends will be required to ignore you and treat you like you are dead, just because you question. Ask if that is a reasonable, healthy way to live?
Good luck.