The Duke of Sussex and the Duke of Cambridge are considering a formal division of their joint household, Kensington Palace, according to a source close to the brothers.
And they are also looking into the possibility to create separate courts to better reflect their very different duties and needs, the anonymous source added, as reported by The Times.
They said: “The brothers have leant on each other and looked after each other since their mother died.
“But now they have their own families, they longer rely on each other as before.”
Their growing families would be the biggest reason behind Harry and William’s decision to take a distance from each others.
Another source said: “William and Harry double act has naturally been supplanted by the two couples and their families.”
This news comes just two weeks after Kensington Palace announced the pregnancy of Meghan Markle, Prince Harry’s wife.
The Sussex had already voiced their desire of bringing up their children as “normally” as possible, while the little Cambridges, Prince George, Princess Charlotte and Prince Louis, will be increasingly under the spotlight as they grow up, with George being direct heir to the throne.
Meghan and Harry currently live in the Nottingham cottage, in the grounds of Kensington Palace, but are expected to move out to enter the main part of Kensington Palace within months or even to find another royal residence.
Prince Harry and Prince William are considering splitting up household and management, sources said
But even if they decided to remain Kate and William’s neighbours they will likely desire to have a different management dealing with their duties.
The source also said the changing duties of the brothers are playing an important role in the decision of William and Harry to split up.
They said: “When William becomes the Prince of Wales, he will take on a lot of extra responsibility, including the Duchy of Cornwall and all that entails.
“Harry and Meghan have non of that, and seems ambitious about forging their own paths.
“If you have one private office tying to manage both, things get difficult.”
Prince Harry and Meghan Markle have successfully undertaken a royal tour of Oceania
Prince William and Prince Harry have been close and have relied on each other since Diana’s death
Prince William and Kate Middleton are likely to be more under the spotlight than Meghan and Harry
A new book by royal correspondent Robert Jobson contains claims the Queen will “stand aside” to allow her son, Prince Charles, to become King in three years.
Mr Jobson said in the past: “I understand the Queen has given the matter considerable thought and believes that, if she is still alive at 95, she will seriously consider passing the reins to Charles.
This would accelerate William’s preparations to take upon himself the role of Prince of Wales – while his brother is strengthening his position of royal ambassador following his successful Royal Tour in Oceania.
However, the brothers’ decision of splitting up management and households may not be welcomed by Prince Charles, who is an advocate of slimming down the monarchy – and cutting its expenses.
The heir to the throne has clashed in the past with one of his brothers, Prince Andrew, who fiercely fought on behalf of his daughters Beatrice and Eugenie to retain their titles.
According to Prince Charles’s plans, only the “core” members of the Royal Family should have a title and allowances.
Meghan Markle’s pregnancy was announced earlier this month
So far, Harry and Meghan have been considered “core” members.
But Charles could not be willing to want to pay for separate households for his two sons, The Times wrote.
However, the source close to the brothers believe the changes allegedly wanted by William and Harry are “obvious” to desire.
They said: “They have become different people with different outlooks on life.
“Splitting the household is the obvious thing to do.”