K.P.
Hey!
Little ones will give you signs of hunger before the crying stage. If they are allowed to cry for very long then they get distressed and it is harder for them to calm down to feed. Look for him rooting with his mouth, trying to suck on his fingers and things like that. Try to determine the amount of time between feedings and have a bottle ready. It doesn't take long for them to go from rooting to ballistic. Good luck and hope this helps.