How many times do you feed a baby bird a day?

a baby bird fell out of it's nest this morning, so i put it in a shoebox and gave it some water and fed it some little peices of worms. its really young and it barley even has feathers yet. also its right eye looks like its glued shut. in all, i've fed it 3 whole worms today, but they are pretty small fishing worms. i dont know if this is too much food or too little. also, are worms the right food to be feeding a baby?