Ok so you are sleep deprived, sore and fed up. Unfortunately, there aren’t any easy fixes for this situation. You either continue as you are, hoping she will grow out of it, or you take action.
The truth is, it will be difficult, but the good news is, it’s very short term. They recover and settle very quickly at this age.
Basically, you have to stop offering the breast in the night. Once she gets the idea that it’s not happening, she will stop wanting it. Your DH will be on night time duties for now, thereby removing the smell of you and your milk. The best tactic is a hands off comfort approach. He needs to be boring, so she’s not rewarded for waking up.
Once you have decided what to do, it’s important to stick to it. If you go for DH taking over, she will cry but she won’t come to any harm. If you don’t stick to your guns, you’ve had it. She knows she will get what she wants in the end.
You all need your sleep. Her waking like this is far from ideal. It’s a habit, feeding from the breast during the night at this age is completely unnecessary. Good luck.