Many new moms feel they should be back to “normal” as soon as they bring the baby home . Unfortunately ,for most “normal” is a long time coming.
Very few newborns are capable of establishing routines. (the newborn time period being the 1st three months) This is due to the incredible amount of growth that occurs in those early weeks. 65% brain growth in the first three months. So its difficult if not impossible to force our adult will on them.
Remember their fussiness is not under their conscious control. It may feel like manipulation but its not . It’s just babies getting use to being a live.
So new parents sleep as much as and whenever you can!