Hi Alicia,
Just wanted to say that we have been there! My LO would wake frequently at night to feed, and he simply would not take any more in the day to make up the calories. We waited until Nathan was on a 4 hr EASY before we made any changes to his night feedings. It seemed like when he was able to go longer in the day w/o a bottle, he was able to drink more at a sitting, and he was able to go longer at night as well. When we finally decided to reduce the night feedings, we swaddled him, used pacifier, and shush-pat to get him to resettle. It was a tough couple weeks, but he eventually made up his ounces in the day.
Hang in there, Alicia! I know it is exhausting! {{{HUGS}}}