You may need higher nic (possibly nic salts, they can be smoother) but yes, you need the right kind of device.
WTA liquid helped me a lot as I went through detox. It wasn't a magic fix all, but it made things easier.
Also, after a year of dual use, you've probably gotten yourself into an entrenched habit. I did that for a while (vaped when it was convenient, continued smoking) for several years. I eventually pretty much gave up on vaping.
When I returned, I was in a bit of a different head/health space and decided to really give it my all.
At some point (and yes, the device and the nic strength all need to be "working" for you, but too high nicotine in a high output, sub0hm, cloudy device will just suck. I showed up here on 12 mg nic and a sub0hm setup my son gifted me after he quit vaping. That did not work, and I quickly moved to the MTL (smaller clouds, but higher nicotine, etc.) it became MUCH easier for me. I quit on 18 mg/ml in MTL setups and it worked for me. I was a 3 ppd smoker.
But my point is, you've gotten into an entrenched habit, so ONCE you sort out your nicotine needs, perhaps you could get out of the "rut" so to speak. If you can, take an inexpensive trip for a week or so with the husband and make the commitment you won't smoke. I might camp somewhere out of the way, or something. I realize this isn't a viable situation for everyone but if you can do it (somewhere without smoking triggers) it might be helpful. Or, just sit down, make the commitment not to fail and etc. Rid your house of tobacco. IDK. CHANGE something, anything, many things (even if it's just your mental attitude about it, because dual using that long becomes , in and of itself, an entrenched habit.
While I agree that there is health benefit to cigarette reduction, I also should point out that most studies on dual use have found very little health improvement compared to not smoking at all. There needs to be a fairly lengthy period of time of vaping only, for true and measurable changes to happen in the body. It just... is what it is. So if health motivates you at all, reducing smoking is FANTASTIC.
At a year into vaping, you haven't really hit the vape benefits. You don't have your tastebuds back, yet, even. Maybe there are some IMPROVEMENTS, but nothing in comparison to actually switching fully.
I say that as someone who dual used for several years. My heath did not improve. I still had no idea what food tasted like. I had not gone through detox, even once.
I'm not telling you what to do, but as far as watching my husband dual use after I quit, I can pretty definitely state that my lungs tongue and circulatory system are probably in better shape than his.
I'm not trying to preach, but as a former dual user, there comes a time to get off the pot, so to speak. Maybe this is your time, but you need the determination and the willingness to do it. Believe me I know it's not easy and I wish you all the luck in the world, moving forward.
Anna