DS just turned 5 and is about 37 pounds and 42 inches tall. He is still harnessed in a Britax Frontier. I plan on leaving him 5 point harnessed for as long as possible, but is there any downside at this age and height? He still hasn't hit the 40 pound mark yet. However, he's mature enough to sit still and has always understood the importance of belting in, if that makes sense. I still assume I should keep him where he is for awhile longer? Do I need to worry about outgrowing height with this seat? He is just fine where he is, but I wanted to make sure I wasn't missing something.
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