catch up on
US /kætʃ ʌp ɑːn/
UK /kætʃ ʌp ɑːn/
1.
to do something that you have not been able to do recently and that you need to do
:
•
I need to catch up on my sleep this weekend.
•
She spent the afternoon catching up on her emails.
2.
to learn or hear about the latest news or information about someone or something
:
•
Let's meet for coffee and catch up on all the gossip.
•
I called my friend to catch up on her news.