doing okay?

doing OK

1. Feeling fine or recovering somewhat. Typically used as a response to a question about one's wellbeing. Oh, I'm doing OK—the grief has begun to lessen with time. A: "How is your sister?" B: "Doing OK. It just takes a long time to get back to normal after that kind of injury."
2. A question about one's wellbeing. You doing OK? I know you've had a rough week at work.
See also: OK
Farlex Dictionary of Idioms.

(Are you) doing okay?

 and You doing okay? 
1. How are you? Mary: Doing okay? Bill: You bet! How are you? Bill: Hey, man! Are you doing okay? Tom: Sure thing! And you?
2. How are you surviving this situation or ordeal? Mary: You doing okay? Bill: Sure. What about you? Mary: I'm doing fine. Tom: Wow, that was some turbulence we just hit! Are you doing okay? Mary: I'm still a little frightened, but I'll make it.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • doing OK
  • doing okay
  • be doing OK
  • be doing OK/okay
  • been okay
  • (I've been) keeping out of trouble
  • OK
  • could be better
  • could be worse
  • been okay?