How do I stop smoking?!

I'm a heavy weed smoker, Go a day without, man I'm one angry lady! Always smoked for my anxiety and use for weight gain, always been under 40kg, much less when I stop smoking, helps my appetite dramatically, pregnancy it curbs my morning sickness. No alot will agree but we all have our own opinions right? So if it's not a nice one, as my grandmother said, best keep it to yourself 🤷‍♂️ I've had two preterm pregnancies, no issues during pregnancy or with baby and never been given a reason why happened but I know it's smoking! 😒 Always told myself I have another pregnancy I would stop right away but why can't I, even knowing the risks?!? 😭8 weeks pregnant, dying to stop but yet still crave it soo bad. Any hints, tips or tricks on how to stop smoking, distract myself, I don't even know anymore? I've tried a vape and oils but 🤮