So my 5.5 week olds have been hand fed....meaning weve played with them and let them eat out of our open flat hand. They go NUTS for some whole wheat bread crumbs (yes they have grit available) but its starting to hurt as they competitively peck the crumbs from our hands. Is this normal? I thought we would always be able to hand feed them but they go so crazy, ouch. So are those days over?