Good for you. Quitting nicotine is fucking hard. I quit smoking over a decade ago, but I finally got completely off nicotine products just last year.
Just some advice that helped me: keep a zero nic vape around so if you’re out drinking (or some other situation where your willpower is low) and find yourself needing to vape you have one that you can hit without backsliding with nicotine. Otherwise you’re going to find yourself hitting a buddy’s vape loaded with 50mg nic salts or something, and you’ll be back to square one.