Male finch seems stressed so we separated parents from babies

Baby finches are about a month old, eating on their own. The father was sleet and a little puffy but still eating and drinking. We thought he was a little stressed wept the babies in a new cage and left him with the mom. Now we are worried the babies can find their food and water?? They did not sleep in their nest last night either. Should we put them all back together? I'm also worried about the male. Would appreciate any advise.