Senior aides are scrambling to come up with a plan to manage the Queen's busy workload amid concern about her numerous public engagements and late-night TV viewing habits, according to a source.
The British monarch, 95, who spent a night in hospital last week, has been on 19 public engagements since returning to Balmoral earlier this month, including a video chat with New Zealand's new Governor-General Dame Cindy Kiro.
She is also said to be a big fan of late-night TV, and the habit along with her busy social life and public commitments are said to have left her "knackered", a source told The Times.
"It has been too much," the source said.
Now plans may be afoot to rein in The Queen's TV watching habits.
"Courtiers may also discreetly keep an eye on the remote control as the Queen rests," The Times said.
The monarch is said to be a fan of BBC's Sunday night police drama Line of Duty and reportedly enjoys discussing its complicated plotlines with one of her closest aides.
It's also claimed she stayed up late to watch Emma Raducanu win the US Open.
The Times quotes a source close to the Queen who says she enjoys getting together with Mabel Anderson - the nanny who looked after the Queen's children.
"The Queen rings her up sometimes and Mabel goes and watches television with her," says the source. "They are very cosy."
The source said Her Majesty has been engaging in "a constant flow of lunches and dinners with family and friends," because she does not want to dine alone.
The Queen's private secretary Sir Edward Young has been urged to "be ruthless" and purge Her Majesty's diary of any functions not central to her role as head of state.
The Daily Mail says officials are understood to be drawing up a list of key events the Queen will prioritise over the next year, including the Platinum Jubilee to celebrate her 70-year reign in June.