I have baby grays! What should I do next?

[teslas intern]

So I have two tanks. One is full of water and tads, the other is a transition tank that is half sand/coco fiber, with some bark for hiding, that has the most mature tadpoles in it. And as of right now, two baby tree frogs!!! One is on land, the other is on the glass!!! Just in case I miss one, I have a piece of Styrofoam in the tadpole tank, so they can climb on that. They could also climb on the Hornwort slash scum I've been feeding them, which sticks out of the water in a few spots...

Anyway, collecting my thoughts here so early in the morning, my plan is to get fruit flies tomorrow. If the pet store is out, how long do I have before I need to feed these guys? I assume a few days until the tail is absorbed. I guess I need general advice on rearing gray treefrog froglets, I've never done this before... Most of them will be released right away, the rest will become pets for myself and my friends... Also I have an LED light on the tad tank, with that melt my foam and release chemicals? I've not known them to get very hot, but I figured I'd ask... Thanks!