A.B.
I feel for you! It sounds like your daughter has her days and nights confused. My son did this as well, but he grew out of it at three weeks, and it wasn't as severe as you are explaining. He would wake up around 8pm and go back to sleep around 3am. My doctor said you just have to work with them and keep them up as long as possible during daylight hours. She suggested taking him outside for walks and to public places where there was bright light (not for extended amounts of time but enough to make them want to see what is up) and making enough noise where he would not be able to sleep. We did that for about two weeks and he slowly day by day got better. I know it is rough and you feel extremely exhausted. Do you have anyone around you that can come in and help you out for a night or two during the week? My mother-in-law would come over on the weekends for the first month to let us get some sleep. There are several articles online that give you tips too, you should look it up. Good Luck.