Making a Moth Mob Attracted to a specific block

I'm trying to make a Moth mob, and I'm trying to make it similar to a bee, where it will find a specific flower and kind of hover and stay around it. The flower in question is a flower that only blooms at night and emits light. Everything about the flower is fine and works great. But I'm having some trouble trying to get the moth to be attracted by the flower, and I'm kind of stuck doing so. Any help would be greatly appreciated!