Why is my almost 2 month old wearing a 6 month sleeper? He's growing so fast 😢. He wears 0-3 onesies…

Why is my almost 2 month old wearing a 6 month sleeper? He's growing so fast 😢. He wears 0-3 onesies and newborn shorts. He's just so long! My husband is 6'4" so Connor is going to be tall too!