Infant sleep cycle

My daughter was born 34w6d. She was in the NICU for 6 days and was released home. In the hospital she slept all day and night except to eat. When we got her home she continued to sleep all day but now she’s wide awake at night. Not sure why things changed. I know babies cycles change all the time.

Any suggestions to switch her sleep cycle ? We try to keep her awake during the day but it’s like mission impossible. TIA