Any suggestions on sleep training my daughter while feeding on demand? I know the first month if not more, sleep training isn't possible. But around the 2-3 month mark, it should work depending on my baby's temperament. I read somewhere that infants have at least one long sleep cycle daily and to make sure this long sleep session happens at night. It was suggested not to let a newborn/infant sleep longer than 2.5 hrs in the day time. What's you veteran mom's thoughts???