Vaping and 12 weeks pregnant.

Please no harsh comments. I'm asking for advice and help. My husband and I were heavy smokers when we got together. We wanted a family so we both quit and started vaping. Weve been doing that for a year now with minor slip ups before getting pregnant. I'm currently 12 weeks pregnant vaping on a level 3 nicotine and was at a 6 when I found out I was pregnant and dropped levels immediately. I can't seem to get past the hump of smoking on a 3. I'm down to only one tank a day, sometimes 1 and a half depending on how stressed I am. Any advice on how to quit? And for those of you saying just stop. Like I haven't already tried that. If I could do that I wouldn't be asking this question 🙃