7 week baby not sleeping in night

Nancy
Hi guys,
I seriously need advice on how to make baby to sleep in night. Currently she is 7 week and sleeping through out the day and not in night. She will wake up at 10 in night and goes to sleep at 6. It is very hard as she really wants somebody to hold her and rock her through out the night. Its very tiring for me and for other family members. I have to start office soon and want to establish her night sleep schedule otherwise i will be sleeping in office. Please advice :(