Cancer-stricken King Charles is hoping to make this Christmas “special” as he prepares for the possibility that it will be “his last.”

“Charles prioritizes duty, but he’s also a family man who knows his time is precious,” a source told Us Weekly Thursday. “He wants a special last Christmas in case it’s his last.”

The insider told the outlet that the monarch, 77 — who announced he was diagnosed with “a form of cancer” in February 2024 — plans to attend the annual walk to St. Mary Magdalene Church on Christmas morning and will be recording his Christmas speech, which airs later that afternoon.

“Nothing would stop Charles from doing that,” said the source, adding that Charles adheres to the late Queen Elizabeth’s teaching that one “has to be seen to be believed.”

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“He will do everything expected of him and more,” they continued.

A second insider told the outlet that those surrounding Charles are worried that “his health isn’t the best,” despite his September update that he’s “not [doing] too bad.”

“They’re taking it day by day,” the source told the outlet.

Buckingham Palace did not immediately respond to Page Six’s request for comment.

Another insider told the outlet that those around King Charles are worried that “his health isn’t the best.”POOL/AFP via Getty ImagesHowever, while this year’s holiday celebration may have a somber mood, the first source added that it would also be “a time of celebration” considering Kate Middleton’s cancer-free status.

“They all want to make the most of their time together,” said the source of Middleton and Prince William, both 43, who recently moved into their new “forever home” at Forest Lodge in England’s Windsor Great Park.

“[They’re looking forward to] creating memories in what they consider their forever home,” the first source noted.

But another source revealed that Kate’s parents, Michael and Carole Middleton, will be joining the Prince and Princess of Wales at Sandringham as they stay by King Charles’ side this year.

Middleton announced her cancer diagnosis in March 2024. By the following January, she shared that she was in remission.Getty ImagesMiddleton came forward with her cancer diagnosis in March 2024 after rumors of her health began circulating amid her noted absences from public events.

After she finished her chemotherapy treatments last September, she announced she was in remission in January 2025.

She has since resumed her royal duties.