My son will be 1 in 4 days and weighs 22lbs. He has the Graco Extend2fit one. It has 4 reclines for rear facing, and a little ball that says in light blue or under 3months, dark blue for over 3 months. But I dont know which recline is best! Hes currently reclines far back because I've been worried about his chin falling down and blocking his airway etc. But now hes big and wants to sit up straighter. Anyone know what theirs is set at? I've searched online forever and cannot find any guideline to which one to use. Help!