I wanna have a second child

It took me 4 years to have a child . I was a smoke before giving birth to my beautiful daughter , i stopped smoking 2 months while i was pregnant . And started back after i give birth , once i give birth , my breast was not producing enough milk so i had to formula feed. Now that im a smoker again , and my daughter is 2 years old .. I want another baby but i dont know , how to conceive the fastest way possible .. Any idea anyone ? #pleasehelp #advicepls #1stimemom #pregnancy #firstbaby #firsttimemom