pull off life support(An asylum-seeking migrant detained by Immigration and Customs Enforcement was pulled off life support after his relatives said they requested that doctors continue the lifesaving measures.usatoday.com4uzhoj)
tune out(When I curl up in my armchair with a book of poems by Wordsworth, Keats or Coleridge, that's really when the rest of the world just gets tuned out. – я отключаюсь от окружающего мираART Vancouver)
switch off from one's busy life(Many gardeners past and present have described the same experiences of switching off from their busy lives or troubles when they're in the garden or yard. – источник. dimock)