When would LO be ready for a Bumbo or something akin to it? He has very good neck and head control and recently whenever he is in his bouncer, the swing, carseat, or lying on his back he does what I best describe as baby crunches as though he is trying to sit upright. Is he old enough for it? I know the recommendation is that they have great head control, but what does that constitute? Atticus's head still wobbles a tiny tiny bit when he's moving his body when I'm holding him upright. Sorry, I'm just curious.