I'm trying to quit

So I've been smoking since I was 12-13 years old well I'm 21 and trying to conceive my 2nd with my first born as soon as i found out (wasnt trying) I dropped smoking completely and didnt have any problem no withdrawal at all after I had my FB I started having withdrawals and started smoking again (stupid mistake) well now I'm having a hard time quitting I used to smoke a pack and a half a day and now I cut back to 4-5 a day it's hard but I'm trying well besides quitting cold Turkey what are some other ways to quit I do vape and try to use it so I dont smoke a cigarette but I know how bad it is I've tried everything I could think of next option is to chew gum thats how my grandpa quit and want to see if it'll work for me but any opinions would be great especially those who have smoked and quit how did you stop how long did it take etc etc