Want to quit smoking

So I know this sounds terrible. But.. before anyone comments rudely. I have cut down.. I'm trying..

My question is any suggestions for quitting? I've been a smoker for years. At this point it's just out of habit/craving. I truly want to quit bcuz it just makes me feel more sick. Doctor recommended to quit by 16 weeks and I'll be 14 next week.

On another note, with my first pregnancy I was told quitting cold turkey could create more stress on baby, I'm being told the opposite this time and they are really pushing me to quit.

I went from 1 pack a day+. I'm down to half a pack or less... Just depends on the day.

I'd appreciate any suggestions.