My son never pooped at night and it’s great. He always wakes up and in 20 after he has a big poop
My boy stopped popping at night since like 6 weeks
My girl stopped pooping at night after about 5 weeks, occasionally she’ll wake all the way up though at and odd time and poop. But that’s like once in a great while if she hadn’t gone the day before.
My daughter has been keeping dry and clean diapers at night since she was 7weeks but she also has been sleeping through the night too