catch-up
noun /ˈkætʃ ʌp/
  /ˈkætʃ ʌp/,  /ˈketʃ ʌp/
Idioms - [uncountable] the act of trying to reach the same level or standard as somebody who is ahead of you- It was a month of catch-up for them.
 
- [countable, usually singular] an occasion when two or more people meet to discuss what has happened since the last time they met- We must get together for a catch-up.
- I have a catch-up meeting with my manager at two.
 
- [uncountable] a service that allows you to watch television programmes on a computer or a special television after the time when they were originally broadcast- catch-up TV
 
Idioms 
play catch-up 
- to try to equal somebody that you are competing against in a sport or game or in business- After our bad start to the season we were always playing catch-up.
- When it comes to digital technology, we're always playing catch-up with Japan.