Re: Diaper Difference?
I'd keep an eye out for actual NB small prefolds. Preemie prefolds weren't much better than a doubler in my experience. They are very tiny and thin.
If you can, find some GMD orange and periwinkle edged, those worked well snapii'd then trifolded later in a cover. We then went into Yellow edges with a snappi then yellows trifolded. That lasted to potty training.
On the hunt for smallish wool! Knit or interlock