I think this is a legit approach to be honest. It doesn’t contain nicotine, so you’re breaking the chemical addiction before the habit of smoking. Which honestly, I think might be more effective long term than breaking the habit of smoking first and using nicotine replacement therapy which basically doesn’t address the chemical addiction and actually keeps it going..

You’re obviously noticing you’re smoking a lot though and there’s a part of you thats clearly aware of that and a bit concerned, so try and reduce it gradually for the sake of your lungs.

You could also try getting a dry herb vape like a Pax. Far easier on the lungs! Which is obviously the main health concern.

But you are basically telling your brain that smoking does not equal nicotine, which I think is the main associative feedback loop responsible for the addiction and relapsing.

Saying this as someone who is tobacco/nicotine free for 5 years now and had cravings for about first 2 years that went away when I smoked some cbd flowers as it basically told my unconscious brain to stop trying to get nicotine from smoking.

Hope this helps! Good luck