Just remember that your good friends, who are decent people and are "like family", are unfortunately in a toxic cult.
Why not learn from the internet why the JW cult is dangerous? perhaps you could show your friends why they are going down the wrong path? As it happens JWs smugly believe that they are the only people on earth who are pleasing God and if you try to dissuade them from their beliefs they will immediately resist and try very hard to convince you that their beliefs are the only true ones because they think they are "Bible based". It's almost a hopeless task to talk sense to JWs but for the sake of your children keep a distance from now on.
Anyone who tangles with the JW cult is going to bring upon themselves enormous problems at some time in the future.
Usually this means having children or parents who will not talk to you if you don't adopt their religion. Many of us on this site are suffering often years down the line because the JW organisation alienates members within families. Shunning members within the family is just one of the heartless tools of cult control -- for your own peace of mind and love for your nearest and dearest, have nothing to do with Jehovah's Witnesses.