That is absolutely correct! 4-6 times daily is a normal eating schedule for a neonate with its mother. So now you've made it to day 3. Let's see how you do.
Neonates are very prone to infection from outside sources. As a new calf, what is your primary source of defense against pathogens?
Active Immunity from Colostrum
High levels of digestion break down bacterial walls
Passive Immunity from colostrum
Active Immunity from placental structures