Allen Carr!!! That book is amazing!
You can try nicotine patches or gum temporary and pick up a new hobby to take breaks and do instead of smoking. One of my college professors took up small figure wood carving. You could try playing a game on your phone if it needs to be easy.
I just did it cold turkey. It was miserable for a few days. Still hard for a couple weeks then it just got easier. But look it up there’s something about orange juice and cream of tartar I think
I went cold turkey when I found out I was pregnant. I smoked for almost 15 years. I was miserable for 3 weeks almost, i tried hydrating, liver and lungs detox vitamins and meditation when anxiety hit and tbh it helped very little but I kept reading about all negative effects on baby and that helped me stay strong. Its almost a lil over a month now and I promise it gets better.
I had some spotting around 7 weeks and just promised myself if baby was ok I wouldn’t smoke again and I didn’t. I smoked for years btw. It’s mostly mental and the habits associated with smoking.