Those were her most famous works, but she did take more realistic portrait style photos as well, I think as her later work. But those weren't the really necessary people were hanging up as decor.I'm also sure - from my memories of Anne Geddes - that most of her photos of babies are covered up with only their faces showing. Didn't she do babies in flowerpots, or asleep but wrapped up like a caterpillar/butterfly/ladybird, faces being the middle of sunflowers, etc?
I did find these examples of her work, which...
But it'd be both incredibly pretentious and stupid dangerous to think you can recreate this by just precariously balancing a baby (especially a much older, much heavier baby who has much more movement vs a newborn) on their cot bars as you snapping photos on your smartphone, presumably from a distance.
So even if it's true, it again shows they only saw that boy as a prop and not an actual little human person to keep safe.