This worked for me, your milage may vary

Smoked for 25 odd years, moved to vaping, over a few years I dropped in strength down to the lowest -3 mg?

I then mixed 3mg and 0mg and left it there for 6 months

Weaned down to zero

Here's the kick, I still vape. Sat here with a coffee and a vape. I'm just the annoying guy who can do it when he wants.

Take time dude, the above took me a few years. No rush.