Last week, the monarch also decided to formally appoint Britain's new prime minister at Balmoral Castle rather than make the more than 800-mile round trip to London for the traditional ceremony at Buckingham Palace.
In February, the queen contracted COVID, during which the palace said she experienced "cold-like symptoms."
With Queen Elizabeth II's death, Prince Charles would become king and his wife, Camilla, formerly the Duchess of Cornwall, will become the Queen Consort, a request made by Queen Elizabeth. (Charles was previously married to the late Princess Diana.)