King Charles attends a state banquet in Kenya on Oct. 31, 2023.Photo:Samir Hussein/WireImage

King Charles III at the table of the State Banquet hosted by President Ruto at State House on October 31, 2023 in Nairobi, Kenya. King Charles III and Queen Camilla are visiting Kenya for four days at the invitation of Kenyan President William Ruto, to celebrate the relationship between the two countries.

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King Charlesmay join theroyal family’s traditional Easter outingdespite his step back from the public eye amid hiscancer treatment.

The 75-year-old monarch is hoping to attend Easter church at St. George’s Chapel at Windsor Castle on Sunday. However, the service will be on a smaller-scale than usual, following doctors' advice to limit the number of people he should come in contact with during his treatment.

The King’s appearance won’t be confirmed until the holiday.

King Charles is “progressing well” in his treatment, and there is an “amplified confidence" in the light of the sophisticated treatment the royal is receiving, a royal source tells PEOPLE.

King Charles visits Kenya on Oct. 31, 2023.Chris Jackson/Getty

King Charles III walks past a guard of honour during the Ceremonial Welcome at State House on October 31, 2023 in Nairobi, Kenya. King Charles III and Queen Camilla are visiting Kenya for four days at the invitation of Kenyan President William Ruto, to celebrate the relationship between the two countries. The visit comes as Kenya prepares to commemorate 60 years of independence. (

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“He is positive, the doctors are optimistic,” the source adds.

The insider says that King Charles is planning for a “summer diary,” but won’t commit to any engagements as they will rely on “medical advice nearer the time.”

“One thing that has been wholly undiminished is his appetite for work,” the royal source says.

King Charles in Scotland on July 3, 2023.Andrew Milligan - WPA Pool/Getty Images

Why King Charles Disclosed His Diagnosis While Kate Middleton Chose to Keep Hers Private.

Andrew Milligan - WPA Pool/Getty Images

While King Charles is hoping to attend Easter with the royals,Kate Middleton,Prince Williamand their three children —Prince George, 10,Princess Charlotte, 8, andPrince Louis, 5 —will not be at the family gathering in Windsorfollowing the news of Princess Kateundergoing cancer treatmentfollowing her abdominal surgery in January.

According to Kensington Palace, Princess Kate will make her official return to public duties based on advice from her doctors.

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King Charles, Prince William, Queen Camilla and Kate Middleton in Scotland on July 5, 2023.Jane Barlow - Pool/Getty Images

King Charles III, the Prince of Wales, known as the Duke of Rothesay while in Scotland, Queen Camilla and Princess of Wales. known as the Duchess of Rothesay while in Scotland attend the National Service of Thanksgiving and Dedication for King Charles III and Queen Camilla, and the presentation of the Honours of Scotland, at St Giles' Cathedral

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The Kingshared his supportfor his daughter-in-law amid her cancer diagnosis, which she revealed in an emotional video message on Friday. He is “so proud of Catherine for her courage in speaking as she did,” a Buckingham Palace spokesperson told PEOPLE.

source: people.com