Help!! I need advice..

So my daughter is 5 weeks old and the past week or so she will wake up around noon and be up until like 830 with taking 15 min naps here and there, but she screams through whole time... I thought being up that long was not normal for her age? She still doesn't sleep through the night even after being up that long! What can I do to get her to sleep during those 8 hours or so she's up screaming??