Your very 1st post was about her not wanting to do anything but feed all day. When she was two weeks old. So how are you saying that the "feeding for hours" didn't start until your supply dropped? And we know at that point your were making enough milk.
Is your LC an IBCLC? Because she sounds CLUELESS about why a child who is bottle drinking AND what formula does to supply. MORE BOTTLES=LESS MILK. There is no way around that. If your child missed two cues at night because she is trying to cluster feed and you give her a bottle you miss two opportunities to make milk. AT LEAST. So when you 1st got here you were worried you weren't making enough because she wanted to be attached to your breast all the time. But she was gaining fine and all was normal. So you started supplementing at night before two days ago. You were talking about Sometimes her taking 3 oz and sometimes her taking 5. (Which is way too much not matter what is happening). So that began before the 27th. I am not sure when but when you did you began damaging your supply. I suspect it was during the 3 week growth spurt. SO when your child started telling your body that you needed MORE you in fact started giving her LESS.
It DOES in fact take MANY babies who are your babies age an hour to nurse. That is VERY normal behavior. And a baby drinking 3oz of formula after a feeding does NOT indicate anything in terms of starving. I have seen women COMPLETELY overfeed their kids via bottle or allow their DCP to do it. I repeat: Just because a baby WILL drink the bottle does not they NEED the bottle and it's no indication of what you are making.
And the more bottles in the mix the MORE likely she IS to cry. Because she is frustrated at how much work needs to be done to get the milk at the breast comparatively. And pumping less AND adding formula supplements DAY AND NIGHT is doing things differently! It's WAY different.
The ONLY way to up your supply is STEP AWAY from the supplements. That it.
Here's a link http://kellymom.com/bf/got-milk/basi...rease-formula/