Anyone's LO grow out of diapers length wise, not by weight? My baby boy is only 2months and weighs 13lbs and I moved him into size 3 diapers last month because size 2 would alsways leave marks in his thighs and sometimes waist like they were too tight. Now the size 3 are doing that around his thighs again. They fit good around his waist and even if I put them on kinda loose they still leave those indent red marks on his thighs. He's a chunky long boy and we use huggies snug and dry. I was thinking of trying huggies little movers. Oh and also at night he once in awhile leaks through them even when he's not in them long. Any advice, ftm here. Thanks!