lose touch/contact

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.
See also: lose, touch

lose touch

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.
See also: lose, touch

lose ˈtouch/ˈcontact (with somebody/something)

not write/speak to somebody or not hear/read about somebody/something as you did in the past: She lost touch with most of her old friends when she moved to London.
See also: contact, lose, touch