supply and demand

i remember that i breastfed micael purely for 4 months and then had to supplement because my milk supply was dwindling.  with the twins, i lasted for 2 months of pure breastmilk before i had to supplement.  i know that breastmilk is all about supply and demand - for as long as your baby demands, your body should supply the milk... and i was trying to figure out why my milk supply ran low. 

joachim is almost 4 months.  at this point, he's sleeping for longer periods of time.  at least 3 hours. and this is adversely affecting my milk supply.  i'm taking natalac and motilium, lots of buko juice, squash soup and other soups... but i feel like my supply is, once again, dwindling.  i'm fighting it, but honestly, i think that this is one battle i'm going to lose.  i'm so sad... 

i can't naman pump in between feedings because it's an alanganin time interval.  it's happened where i pump just to keep up the supply and then he got hungry 30-45 minutes after that.  and it was hard because my milk didn't let down right away (because i had super emptied both sides!) and he was screaming... poor kimi... and only after a while did it let down.  after that, i've been hesitant about pumping in between feedings. i don't want to have him bitin again.

if you know of any suggestions to help me with my milk supply, please let me know!  like i said, i'm fighting the fact that i feel like my milk supply is going down...