"pick up the threads" is a correct and commonly used phrase in written English. It means to resume or continue something that was left unfinished or interrupted. Example: After a long break from painting, I was finally able to pick up the threads and finish my latest masterpiece.
You can no longer just pick up the threads.
"We have to pick up the threads again".
As Frodo puts it: "How do you pick up the threads of an old life?
I set it aside, hoping to pick up the threads some other night.
Government and the Independent Police Complaints Commission IPCCC) must pick up the threads and follow them unceasingly.
Each time I revisit my past I try to pick up the threads of a previous search.
"Maybe, you could do that, but" Bobby picks up the thread.
Ash picks up the thread: "Politics is a tool to solve a situation at one moment.
The roses soon bloom again on her cheeks, and she picks up the thread of her mostly privileged history again.
It feels impertinent to press him again on his intimate life, but he picks up the thread.
Now... .. Kim picks up the thread: "You know you're old when you don't give a fuck".
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.
Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com