Smoking while pregnant-Anyone on the same boat?

For my first 2 pregnancies I wasn't a heavy 'smoker'. I've started vaping heavier within the last year after my pregnancy with my son. He was a lot easier to manage the smoking while pregnant. Anyway, this third pregnancy was VERY unexpected. I just had my second a year ago (will be giving birth when he's about to turn 2). I know smoking is bad but how does someone manage it? Like, do I just try to go cold turkey? Google doesn't help because of course they constantly give you the results of what may happen. I guess I'm looking for more real stories from moms who've been here before or going through the same thing. I was drinking a little heavy and ofc vaping a lot during my first tri because I wasn't expecting to be pregnant. On ultrasound doctors say baby looks good and always telling me baby's heartbeat is strong but I'm just a worried Wanda and scared, tbh. I know it's easy to say just stop but the reality is it isn't.