"All we can do, and all I can do, is try and support them," Prince William reportedly told a friend of his brother's plans to limit his royal role.
Twitter users are speculating over where the pair's independent income may come from.
Amid negative media attention, the couple will split their time between the U.K. and North America while working to "become financially independent."
Queen Elizabeth II, Prince Charles, Prince William and Prince George appear in the picture that marks "the start of a new decade."
Meghan praised "amazing dad" Prince Harry and revealed an intimate pic of him admiring his infant son.