zero nic user here too..
@gopher_byrd knows what he is talking about.. 1% step downs work.
I went from 3mg to 0mg (OMG!) New years, after vaping for almost 10yrs, 11 in May of next year. No regrets and in fact, after 5 mo now, my blood pressure is fine, I sleep good.. it works
I would suggest keeping some nic juice around, just like with cigs.. if you find yourself craving anything.. one time hitting helps.. but you will find yourself reaching for zero nic juice more often. The flavors will taste clearer too..
I wish you the best!