Vaping ? Help

So with my first who is now 9 months I never smoked or vaped while pregnant with her.

Recently due to stress I have started vaping but only 3mg nicotine which is the lowest I can get besides no nicotine.

I want to stop because obviously it’s not healthy as I just found out I’m pregnant with my second.

Is there any advice y’all can give me on slowly stopping?

I don’t want to cause my body stress by stopping all at once.

Advice???

(I’m freaking because it says it contains a chemical that can cause birth defects and reproductive harm😩)