For me its 6-12 months. Nathans just at that stage now where hes mobile but too young to understand anything. He can't stand being left on his own and he has to still be fed every meal. For me the 1st 6 months are quite easy, apart from the sleep issues I think babies are easy, they sleep a lot and can't do much. After 1 year they can at least feed them selves if they have to and manage not to butt the floor as much and understand NO. Nathans age now, 9 months, I' find quite hard cos he seem to be in-between everything :