CBD will definitely help you quit. But using pure CBD isn't very helpful, as it really needs some THC to work (i.e. cannabis>hemp). There's some pretty good products out now (in dispensaries, anything you buy on Amazon is crap) that are dosed liquid CBD sprays (at specific CBD:THC ratios). As in, make an oil (CO2 or ethanol extracted), and then emulsify in coconut oil (or MCT) to create a homogenous liquid. Then, at a known potency, you have a dosable medicine.
OT: glob of CBD-rich RSO, 5mg oxy, dabs of "Lemon Oranges" (Tangie and Lemon OG extracted together--lots of citrus-y terpenes)