I found that the adults live just fine with the babies. My adults do not have a prey drive towards the toadlets.

If I put a bunch of crickets in and they all start getting into feeding frenzy mode, then occasionally a toadlet will end up in the mouth of an adult as they go after the same cricket. But they don't have teeth. And so far, any time i've seen an adult get a hold of a toadlet, it soon lets go and the baby appears unharmed. Agitated but okay.

I'm thinking it's going to be over a full year before the toadlets grow to adult size.