My one month old baby is crying a lot during night and not sleeping while she sleeps on days. Pls suggest what should I do. She is having formula milk..

No sleep. Try to keep her awake as much as you can during the day, avoid late afternoon naps, I know it is not easy but keep trying eventually she will learn to sleep through the night, be patient, you also try to sleep when she is asleep to get some rest. Good luck & enjoy your baby. .