1. This was covered, including FGM, but seemed less consistent than the pattern for males.
2. There wasn’t much on this—a few notes on swaddling or hammock systems that included some kind of drainage. One note on how in one culture men hold babies away from their bodies to avoid getting wet, while women hold the babies close (but I’m guessing getting dirty that way?) I also don’t feel like I understand how this has worked historically, especially in colder climates where you can’t just leave them bare.
3. They talk about how mobile cultures (I think foragers) hold babies upright and encourage them to step, which does lead to earlier walking. Using a cradleboard is the opposite method, restricting the baby’s movement but it allows them to be tied to an animal, keeping them from being underfoot.