It's no secret that Kate Middleton will one day become Queen of the United Kingdom.
According to People, King Charles III has "accepted limitations during his cancer treatment," allowing Prince William to take on more duties in recent months.
"Although the King is carrying out his duties with typical determination, he has had to accept limitations during his cancer treatment. As a result William has been taking on more responsibilities, and he and Kate have been preparing for their future roles sooner than they would have expected."
While Middleton continues to focus on her health following chemotherapy amid her battle with abdominal cancer, she is "increasingly aware" of the fact that she will eventually become Queen when her husband is crowned King.
"There’s a sense of calm before the storm. They are next in line for the biggest job of their lives, and of course, Kate’s health has taken priority, but it’s also allowed everyone to take a step back and figure out what’s important right now," an insider told the outlet.
Just last week the Prince of Wales met with world leaders at "the official reopening of Notre Dame Cathedral in Paris" and told U.S. President-elect Donald Trump that his father was "fighting very hard."
For more on King Charles' health, read: King Charles III Unveils Rare Personal Health Update Amid Cancer Diagnosis.