This may sound flippant so please ignore if inappropriate.
Never having lived with any Witnesses I can image you've already tried this though,
Perhaps another approach could be to explain that that method of communication, door-to-door, is scaring people. This method of delivery of message hardly works. I wonder if their governing body can accept that the world has modernised and door-to-door canvassing is causing people to think they are mad.
Three million people were motivated to march in Paris after a few days. Objectively, the activity of getting any kind of message out there has to keep up with the times. The Witnesses who I have seen standing in the High Streets in the UK have had much more success, but still end up with a pile of litter nearby.
Canvassing in this way is not the best use of evangelising time, Paris was. This makes me wonder how effective their marketing strategies are. Opinion only but they only get 1 out of 10 here for marketing. If people won't talk to them because they believe they are odd in their evangelising then they will not even get to begin to explain the message they are entrusted with.
But I admire everyone who tries so my very best wishes to both of you, and perhaps to your wife, don't give up trying because you mean well.
In conclusion, faith without effective works is rather pointless if sin is not doing your best. If the governing body can't see this then maybe it's time to retire them to a nursing home and let some people do it properly, eh? Just because they ain't dead yet doesn't make every word they say true. Sometimes it's easy to stick one's religious head up one's religious rectum and not see the light of God, eh, you miserable old farts over there in HQ? I'm not trying to defend Jehovah's people from any one here. I'm trying to defend Jehovah from his people who've gone insane. They have the message to mankind correct but they've gone and got the rules a bit confused.