I really like the offer to "buy back" or offer him a cheaper alternative. A REO improperly utilized seems like a waste to me.
Also, his significant other suggested that PG or VG might be harmful to his health and perhaps total cessation is best. Accordingly, he probably can't vape everywhere at home, near her, etc. Don't even bother to respond to this one...frustrating.
Also, does it really take some people weeks and weeks to completely stop? My experience was that I wanted to quit analogs, had a working alternative and just did it. My bro RIP did the same. Perhaps I'm on a high horse and having too high of expectations.
i'd be willing to lay you good odds that weeks, or months or even years is far more common than the lucky ones who just quit right away...