May I know How much feeds does one month old baby have a day? My baby is crying for milk every 2-3hr a day and I'm trying to delay longer hr in the night as really tired if I'm going back to work soon.

This time range is normal for a breastfed baby at that age. My baby was like that but don't worry it'll get better. If you are comfortable with co-sleeping with baby at night that'll help as you can just nurse side lying. Hang on there mummy.