I smoked for 43 years and was desperate to quit. It still took me something like 5 ½ months to get off the cigarettes completely. And yeah, I coughed when I vaped and then turned around and coughed when I smoked. Fun time. For me it was finally going up to 24mg eliquid that got me off the cigarettes completely. I was lucky I found a flavor, coffee, that I liked. It’s got to be really hard to quit using something you don’t like the taste of.
Was it his idea to vape or yours? You can lead a horse to water and all that rot. I know all about it, I used to be owned by a stubborn horse.
There is a great saying around ECF: It’s not the cigarettes you do smoke that we count, it’s the ones you don’t. It sounds like your father is doing a bang up job with stuff he’s not particularly fond of. Drag his little self off to a decent vape shop with a tasting bar where he can try different juices. He may find one he loves or just a flavor or two that he likes but that particular brand isn’t quite spot on for him. It will at least give you both a direction to go in. A warning though, if he does quit smoking, his tastes will change as his taste buds recover. Happens to the best of us.
Finding what equipment, juice, drip tip, whatever, is a very individual thing. There are those pesky individuals that take a hit off an ecig and never smoke again. Most of us aren’t that gullible and insist on hanging with our old trusty buddy the cigarette for as long as possible. As The Ocelot said here
http://www.e-cigarette-forum.com/fo...625273-still-want-cigarette.html#post14648335 , for some it’s more than just the nicotine in a cigarette. That’s well worth looking into.
Good on you for trying to help him but please remember it won’t be an overnight change. There is a lot more going on than just sucking on dead plant material. More than anything else, he needs you to have patience and understanding (something I think you do have). The tobacco companies have spent billions engineering cigarettes to become extremely addictive. With the right tools, help and understanding he can beat them too, but only if he wants to. If you can get him to, have him read this thread. We’re all pulling for both of you. A lot of good information and support on this forum. I wish you both the best of luck.