A similar thing happens with kids. My little garden of children have grown so much this past year. In less than a month, my two 3 year olds will become 4. They can write their own names, completely dress themselves, and wear big kid underwear. In less than a month, my two 2 year olds will earn "and a half" at the end of their age. They can wait their turn, share their fruit snacks, and climb on the playground all by themselves.
Thankfully, there's still lots of time for more growth and changes.