Vaping during ttc

I used to be a heavy smoker (a pack a day). When I got pregnant i quit without hesitation. But at 15 weeks I suffered a miscarriage and started smoking again. Now I’m finally getting cleared to ttc again after 7 months.

I have a little more than a month left to stop smoking before I start ttc but it is way harder than during pregnancy because I don’t have as much motivation. Sometimes I even hate myself for losing my son so my health doesn’t matter to me as much as my future baby’s. I decided I’m not ever going back to cigarettes but I need something to transition. So that’s where vaping without nicotine comes in. Is it safe a month before or during ttc (given that during two week wait and pregnancy vaping will stop completely)? What do you think?