1
general::
Phrase(s): lose one’s touch (with someone or something)
Fig. to lose one’s ability to handle someone or something. • I seem to have lost my touch with my children. They won’t listen to me anymore. • We’ve both lost our touch as far as managing people goes.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Fail to keep in contact or communication, as in The two sisters lost touch years ago, or Please don't lose touch with me after you move away. [Late 1800s] For an antonym, see IN TOUCH.
American Heritage Idioms