Hers a glitch that I found. I'm not sure if this works for everyone or is just a glitch in my game, but try anyway
After you put out all the fires for the fairies, go and talk to the green fairy. She will give you an egg.
Now, either leave the fairy area, go into a hole, or teleport. Now, go back to the fairies and talk to the green one again, she will give you another egg. Keep doing this for lots of eggs.
Note: You dont have to have just completed this quest, it will work no matter what point your at, as long as you put out the fires at one point.