Yupsss been in the same situation as you, faced the exact same thing after discharged from hospital. FTM here, and the first few nights was a total nightmare mental breakdown. Baby awake from night till dawn everyday and crying non stop for idk what reason. Even after being fed, swaddled, pacifier egc 🥵🥵 I believe its because theyre still adapting to the outside whole and still dont know how to differentiate day and night. Now my baby is almost a month old and getting better, most of the time at night would sleep back after awhile after being fed. Hang in there !!