...if you're still producing enough milk? my letdown doesn't seem to be as strong and/or long as it used to be... & what do i do when i stop producing milk?? lol,, sounds dumb. but LO doesnt really like the bottle.                
                Mommy to MonsterMan on January 27, 2010 - 9lbs.5oz. 21"
Mommy to "Shnoobs" on August 8, 2011 - 5lbs.15oz. 19 1/2"
"The best thing to hold onto in life is each other"-Audrey Hepburn
             
        
Re: how do you know...
If LO doesn't seem hungry/is happy at the end of a feeding and having wet and poopy diaper, you are probably producing enough milk. My pediatrician also does free weight checks, so I go in to check LO's weight if I am worried she isn't getting enough to eat.
Don't worry about what to do when you stop producing milk. Wait to tackle that problem if/when you have it. LO will take a bottle if hungry enough. LO will not starve.