A royal commentator has claimed that the Queen is trying to "hold back the King" after he has drastically "ramped up" his royal duties.
This comes after Charles presented his eldest son Prince William with the title of Colonel-in-Chief of the Army Air Corps.
The event was his latest engagement since he returned to work at the end of April, almost three months after Buckingham Palace announced he was being treated for an unspecified type of cancer.
Speaking to GB News, royal commentator Jennie Bond said: "I think most people who are honoured feel particularly special if it is the King who gives them their medal."
King Charles
GettyGB News host Tom Harwood asked: "This does seem to be a ramping up in work for the King.
"We had the Buckingham Palace garden party, we had the handing over of those military titles, and now we've had this investiture too. Is this a sign from the palace that the King's on the mend?"
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Bond responded: "They said he'd be carrying out two or three engagements every week. It's at least that now.
"Most of them don't last too long, so they are probably not too tiring. There he was yesterday with his son at the ceremony, the handing over and the garden party, as you say.
"So yes, he's being seen in public as much as he possibly can, but there are slight amendments today. There were about 50 people at the investiture. Normally there'd be 60 or 70.
"Perhaps it was sort of ten, 15 minutes, maybe half an hour shorter than usual. So the doctors I think are monitoring it closely and whispering in his ear, don't get too exhausted.
Jennie Bond said that Camilla is trying to "hold him back"
GB News
"We know that Camilla is trying to hold him back a little bit, but we're told he's a bit like a caged lion.
"He wants to get out there, he enjoys it. I mean, he really thoroughly seemed to be enjoying the investiture."
Last week, Buckingham Palace announced: "At the Army Aviation Centre in Middle Wallop, His Majesty The King will officially hand over the role of Colonel-in-Chief of the Army Air Corps to His Royal Highness The Princes of Wales.
"In August 2023, following His Majesty's Accession, The King was pleased to announce military appointments including that The Prince of Wales would become Colonel-in-Chief of the Army Air Corps.
King Charles III and the Prince of Wales at the Army Aviation CentrePA"The role was previously held by His Majesty The King, as Prince of Wales, for 31 years."
Before taking over the role on Monday, Prince William posted sentimental pictures of his time in the armed forces.
In one image, the prince stands with his arms crossed in front of a helicopter and in the other, William smiles in the cockpit wearing a helmet.
Prince William served as a search and rescue pilot and as an air ambulance pilot during his time in the military.