Klingon growth spurts

This is why I’m always confused about Alexander and Klingons in General. I always think that he was born some time prior to K’Eylehr first visit on the Enterprise in season 2 (like maybe at some point after the academy days but before TNG) but here alexander says he was born on Stardate 43205something, meaning early season 3, so after 1st visit on the Enterprise. couple. given the fact that he’s upright and walking a year later on TNG and that he’s a teen/young adult by the time the Dominion War rolls in Klingon gestation and growth periods are a lot shorter than humans (which, in a warrior society could make sense). That also means he’s EIGHT YEARS OLD WHEN HE’S SERVING ON THAT KLINGON SHIP DURING THE DOMINION WAR (season 3 of tng - when he says he’s born - is set in 2366 while season 6 of DS9 - when he shows back up - is set in 2374.)

It could also be that he just messed up the stardate he was born on (and Worf didn’t remember/know his birthdate which is why Alexander answered the teacher)