Floppy-necked-baby photography involves tricks. Tricks to make babies look like their necks aren't floppy, because it looks uncomfortable. Knowing different ways to prop babies up, and being versatile with whatever propping items might be at hand, whether it's a pile of cushions, towels, stuffed animals, parent wearing a backdrop poncho style.
I just wanted to give another plug to Radiolab podcasts. Editing flies by when I listen to Radiolab. The Sleep episode is fascinating. Did you know that most animals except for terrestrial mammals are capable of sleeping half a brain at a time? That if there are 4 ducks sleeping in a row on a log, the two in the middle will have both eyes closed, but the duck on either end will have the eye on the outer (non-duck facing) side open? That sleep is the equivalent of a brain bath? Really interesting stuff.