I think Greg meant it was the first solo overnight. In previous eps they showed them splitting nighttime duty and both of them being very involved with Declan’s care. He is such an adorable baby.
I don’t like Bobby for many reasons, but am skeptical if the “more babies” isn’t a manufactured story line. He previously expressed concern about her difficult pregnancies and seems to understand the severity. They don’t show his work, their families, trips, etc. so maybe they feel the need to creat a little drama.