up to doing
up to (doing something)
Able or willing to do something. I'm not really up to going to the mall—I think I need a nap instead. She said she's not feeling up to having visitors so soon after her surgery.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
up to doing something
[feeling] able to do something. Do you feel up to going back to work today? She just isn't up to staying up so late.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.