Prince William and Kate Middleton are reportedly on high alert amid King Charles' health struggles.
The monarch recently left the royal family worried about his sudden hospitalisation due to side effects of cancer treatment.
Despite facing health challenges, the King is determined to perform royal engagements, showcasing his resilience in the face of adversity.
However, the next in line to the throne, Prince William and the future Queen Princess Kate are "anticipating the possibility of assuming the throne sooner than expected," Radar Online claimed.
An insider shared that the royal couple "remain hopeful for his recovery and wish for many more years of his reign, but they cannot ignore the stark reality that circumstances may change unexpectedly."
The monarch's hospitalization served as a "sobering reminder" of his ongoing health woes, "indicating to the family that they have little control over the timing of royal succession."
Amid the cancer treatment, the King has made a surprising decision for his eldest son as he is aware of his situation. The monarch has been "preparing William to take over at a moment's notice."
Royal family announced in February 2024 that the monarch was diagnosed with cancer, leaving the world in shock.
He is currently undergoing medical treatment for his undisclosed form of cancer.
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