Babies start using the only communicating tools they know to start asking for it as soon as they are born, you can read here about normal newborn behavior. (theleakyboob.com)
But you really need are the nuts and bolts the how to, how another baby is getting enough, how to get started what normal newborn behaviors are. (pregnancymagazine.com)
The doula helps with soothing techniques, offers breastfeeding or bottle feeding support, and explains normal newborn behavior. (dona.org)