Dear Earth
Homeopathy is different that any other type of alternative healing, 15 babies may have problems sleeping but all 15 babies will need their own special homeopathic remedy its not one remedy for everyone. Specifics are needed via answering a casetaking questioneer. Can be found here on this website.
The onset /cause is the big question? Each baby may have a different reason for sleeplessness.
Regards Aromatheraphy; i can suggest using Pure essentialoil of Lavender. A few drops on the baby's pillow or blanket the aroma is verry claming. But it MUST be pure essential oil not immitation lavender 'smell'.
Regards Reflexology: i can suggest using soft massage strokes all over the baby's feet specially the bottoms around the toes for aprox 15 min. prior to sleeping,this even works on grown people!
Welcome to the forum
GT