London (CNN) The Duke and Duchess of Sussex have unfollowed all of their fellow royals on Instagram, and are now following just 16 other accounts.

Harry and Meghan carried out a cull of their exclusive following list, which previously included Kensington Royal -- the account of the Duke and Duchess of Cambridge, Prince William and Catherine Middleton -- and Clarence House, that of Charles, Prince of Wales, and the Duchess of Cornwall.

The change has nothing to do with family problems, however.

Instead the couple have decided to use their Instagram account to highlight mental health and projects dedicated to the field.

The move comes as Mental Health Awareness Month begins in the US and Mental Health Awareness Week, May 13-19, approaches in the UK, reads a post from the couple.