be in the middle of something/of doing something

be in the middle of (something or someplace)

1. Literally, to be physically located at the center of something or someplace. We're in the middle of the crowd, so it will take us a while to push our way out. Listening to my music, I wandered until I realized I was in the middle of the woods, with no idea which path I took.
2. To be in the midst of, or currently engaged in, something, such as an activity. I'm in the middle of a meeting right now, can I call you back? Then, right in the middle of the concert, he walked offstage.
See also: middle, of

be in the middle of something/of doing something

be busy doing something: They were in the middle of dinner when I called.I’m in the middle of writing a difficult letter.
See also: middle, of, something