How do I care for baby birds?

Allie
Thursday we had a pretty bad storm and three baby birds were thrown out of their nest and onto my trampoline, the nest was almost completely blown away and there was barely anything left but I attempted to make a nest with what was left in a small box. After giving them some chopped up worms and warming them up I set them in the nest and I waited about 30 minutes to an hour before I brought them back inside, I was afraid they'd freeze to death because it was still a bit chilly and wet outside. Since I didn't have any luck with the nest I called a wildlife rehabilitator and she said she would take them but she stopped answering me so I think I'll have to take care of them until Monday. 😳 I've been feeding them chopped up worms every 20-30 minutes and when the sun goes down I wake them up once or twice to feed them in the middle of the night. I don't know if there's anything else I should be doing, they're in a shoebox with a towel twisted in the shape of a nest and a heating pad under it. Is there ANYONE who could give me any advice on how to care for them until I can talk to the rehabilitator again? They're very young, their eyes haven't even opened.