Despite this setback, Charles, aged 75, is eager to resume his royal duties and is exerting pressure on his team to allow him to do so as soon as possible.
In a rare interview on Australian television, Peter Phillips, the son of the Princess Royal, provided insight into the King's current state of mind.
He expressed that Charles is frustrated that he cannot engage in all the activities he desires to, but acknowledges the need to focus on his recovery.
Peter mentioned that the King is pushing his staff, doctors, and nurses to expedite his return to a normal work routine.
Peter also noted that Charles is keen to regain a sense of normalcy and is slightly disappointed that his recovery is taking longer than expected.
Recent observations from individuals working closely with the King reveal that, despite not being able to fulfill public duties, he remains actively engaged, providing numerous ideas and suggestions.
Since early February, Charles has been undergoing treatment for an undisclosed type of cancer, diagnosed after receiving treatment for an enlarged prostate.
Additionally, the Princess of Wales has been undergoing preventive chemotherapy after cancer was discovered following abdominal surgery in January.
Peter also praised the Princess's work ethic, highlighting her dedication to both public and family life.
He discussed Princess Anne's indifference towards media coverage, emphasizing her focus on fulfilling her duties.
Peter commended his mother for her relentless work ethic and mentioned how her example, along with that of his father, had a significant influence on him and his sister, Zara Tindall.
Acknowledging his mother's dedication to her work, Peter emphasized the importance she places on her home life to find relaxation and normalcy.
He also mentioned his visit to Australia to represent the International Foundation for Arts and Culture, stressing the strong bond the Royal family shares with the country with many friends residing there.