low bm supply

i started to dl lo when she was 2mths. and usually dl only in the morning as i havent smoke. I'll latch until 4plus pm n faster my first stick I'll feed bottle. now my fridge has no milk left as when i dl n pump i get very very little milk only! i wud say I'm a just nice supply for my baby... I'm trying to dl as much as i can now in hopes to boost supply, i also cut down on smoking to 2sticks in the day and no smoking at night. i dont drink milk, n cannot swallow pills. any other ways to boost supply