So I've put some thought into this... I've owned several car and noticed the rear seat of the car itself generally sits at different angles for passenger comfort. This in essence changes how a car seat sits on that surface, some seats lay with the level line perfect, and others have the seat unlevel no matter how much you adjust. I find my dear son 11 months old dear facing having his head hang down onto his chest often when he sleeps because of this. At 12 months would he not be most comfortable and safer due to the fact that this seat reclines better forward facing in my car? The line levels out, and he falls into more of a hammock position to support his head entirely... vs now he has little to no head support from the seat at all even on its max setting.