King Charles has no option left but to abdicate his throne in favor of Prince William due to his battle with cancer, a source has revealed.

According to a new report, the monarch’s ongoing cancer treatment has accelerated William’s plans to take the throne, and the transition could happen “sooner than expected.”

talking with New Idea magazinerevealed a royal reporter that the king has had to accept “limitations” during his treatment, with the Prince of Wales taking on more responsibilities.

While William had hoped to become king much later in life, Charles’ cancer will see him ascend to the throne in a year or two, an insider speculated.

“[The King] has had to accept limitations during her cancer treatment,” said US royal reporter Sally Bedell Smith. “As a result, William has taken on more responsibility.”

The source shared Williams’ stance on the matter, saying the Prince of Wales had “always hoped to inherit the crown much later in life, when his children were well into their own adulthood.”

“However, Charles unfortunately has to carefully steer William towards possibly accepting a different fate,” they added.

“The only upside to all of this is that if Charles stands aside to focus on his health, he will have the precious and rare experience of seeing his son become king.”