in your own time

Từ điển Oxford Advanced Learner 8th

▪ I. in your own time idiom
in your free time and not when you usually work or study
Main entry: ↑time_idiom
 
▪ II. in your own (good) ˈtime idiom
(informal)when you are ready and not sooner
•Don't hassle him! He'll do it in his own good time.
Main entry: ↑time_idiom