Babies can make positive and negative sleep associations with smell. Introducing a comforter from birth is one way of introducing a positive sleep-smell association.
The first sound babies hear is their mother’s heartbeat and womb sounds. If you introduce a musical sleep toy from birth, your baby will make a sleep-sound attachment to it.
Babies are attracted to colours, lights and moving patterns from birth and the last thing your baby sees before drifting off to sleep will become a sleep association.
Loving touch and cuddles are important for a baby's emotional development. However, babies and toddlers do not need to be held at sleep time. Excessive touch at sleep times prevents self settling.
Dummies and milk feeds at sleep times will effect your babies' sleeping patterns. Follow my Multi-Sensory Sleep Routines to avoid a milk-sleep association becoming an issue.
Milk Sleep Association