Welcome back Tara!
Sometimes under stress people do go back to smoking, don't beat yourself up. Going down to 0 nic may be possible for some people, but I'm not one of them. I have gone down to 6mg for most of my juices (from 1.5 PAD for 40 years), but still need the nic.
You might try some WTA this time around, at least in the beginning or occasionally. Juice with Whole Tobacco Alkaloids have properties that naturally occur in tobacco, but are filtered out when straight nicotine is distilled (not when cigarettes are made) and some people find WTA relieves their cravings when regular juices do not.
Aroma sells flavored WTA juices, but also unflavored. The unflavored is 24mg, so people I know may take one or two drags when really craving, then vape regular juice the rest of the time or add a couple of drops to their regular juice. I used it for a few months, then found I didn't need it anymore.
Aroma Ejuice