It's hard to believe that Prince George is already 3 weeks old!
So what can the new parents expect from the future King of England? E! News breaks down all of the milestones to look forward to from a wee little one at that age.
First and foremost, this time period is all about getting a steady sleep and eating schedule down pat.
The little prince's day-to-day life is far more predictable than when he was just a newborn. He's also alert way more than before and the new parents may be noticing that he's picking up on their faces, watching them talk and quieting down when he hears his parents' voices.
But it's most likely not all easy breezy at the Middleton family home in Bucklebury—where the new family of three is staying.
A baby at that age is also starting to be quite fussy during the evening hours, partially due to his newfound attention span when he's awake.
Scientifically speaking, as a baby's nervous system develops, it can take its toll on the little one's energy levels. This in turn, can cause a babe to get cranky and sleepy earlier.
But what are some other positive benchmarks that Kate and Wills will soon relish in?
Well, George isn't nearly as fragile as he once was and now has far more control over his head. He's quickly going to gain upper body strength, so tummy time during this point in time is of the utmost importance.
Tummy time ensures that the baby builds its shoulder strength and is the beginning stage of learning to crawl. Watch out everyone, there's going to be a young royal on the move shortly!
And while the Duke and Duchess of Cambridge's little one is most likely only sleeping for three to four hours at a time, there are undoubtedly enough hands on deck at the Middletons' home to help the new parents get plenty of rest.
Perhaps Carole, Michael, James or Pippa Middleton can rotate between bottle and diaper duty while the royal couple gets some rest.
After all, that's what family is for!