I agree with what Starangelk and Peanutter said. I don't think you're doing anything wrong at all! Sometimes babies feed A LOT!! Cluster feeding is tiring for mums but "this too shall pass" - that became my mantra!

Right up until we stopped breastfeeding, I "demand fed" my bub. Somedays were a treat - perfectly spaced feeds (just like the "book" says) and other [B]mostB] days we just went with the flow. In the beginning it felt like I had my boobs out constantly.

You're doing a great job - pooing and weeing are great signs that she's getting enough from you.

Hang in there