Question - I took some sweet potato nubs (slips) and stuck them in dirt

[Dover]

in a little container in my kitchen window a few days ago. They were only about an inch long. I know this isn't quite how it's usually done according to the info I dug up on sweet potatoes (in thread below), but these little slips have doubled in size already and have little leaves...so now what? Do I let them get taller, do I go ahead and stick them in the garden,....?