My one month old baby is sleeping whole day and night awake from 1am to 9am.is it normal? her weight gain and feeding is normal

A. Actually in the initial age if you look at it a lot of kids in fact maximum kids sleep better during the day and less the night but usually the schedule changes within 15 to 20 days of work for initial time it’s going to be little difficult for you to manage but it is normal just adjust a little bit for this for the time being