Andrew Mountbatten-Windsor has entered therapy amid fears he's "going stir-crazy" while living under what insiders describe as a form of unofficial "house arrest" imposed by his brother King Charles III on the monarch's Sandringham estate in England's Norfolk region. The former Duke of York has been forced to retreat from public life to Wood Farm, a modest five-bedroom farmhouse, until renovations are completed on a more permanent home, nearby Marsh Farm, later this spring.