Quoting Allissa Specht:" My son turns five months old in a couple days and is 20 lbs, 28 inches. He's has been off the growth ... [snip!] ... car seat at Christmas. Just make sure your child is rear facing until they are 35 lbs (new recommendations in Michigan anyways)"
Yeah I know Im going to make sure hes rear facing for as long as the seats allow me to for his size. And jeeze how big was he at birth? mine was 20 inches and 7 lbs and at his 4 month appointment he was 26 and half inches and 16lbs... where has my tiny baby gone hes just sooo big now lol.