pick up the thread(s)
From Longman Dictionary of Contemporary Englishpick up the thread(s)pick up the thread(s)CONTINUE/START AGAINto begin something again after a long period, especially a relationship or way of life They had known each other as children, and were picking up the threads of their friendship. → threadExamples from the Corpuspick up the thread(s)• Enough to do picking up the threads of his own life.• He picked up the thread and followed it.• They talked non-stop in an elaborate relay race, one picking up the thread as soon as the other paused for breath.• She gradually started to pick up the threads of her life.