Sleep training of baby can be started right from birth: Babies that sleep with their mothers ask to be fed more often during the night as the physical proximity with the mother, her smell and the disturbances due to sleeping with adults tend to make the baby demand more night-time feeds. This frequent waking up in the night is detrimental for sleep training. Once the baby gets used to sleeping with parents the habit will be very hard to break or change when as they grow up.http://www.dorababy.com/baby-chair/feeding-high-chair/