One thing that I learned my first year on the tenure track: ask for feedback about a third of the way through. You could do this in a survey to get more general feedback -- learn what's going well, what's not so clear, what they liked to read, what they found challenging. And then you can discuss more generally what you learned and make changes where necessary. I found that it improved my final evaluations, but more than that, it let all of us talk together about the experience of the course. (Worth noting that it's scary to do if things aren't going well -- but it can help put them on the right track too.)
One thing that I learned my first year on the tenure track: ask for feedback about a third of the way through. You could do this in a survey to get more general feedback -- learn what's going well, what's not so clear, what they liked to read, what they found challenging. And then you can discuss more generally what you learned and make changes where necessary. I found that it improved my final evaluations, but more than that, it let all of us talk together about the experience of the course. (Worth noting that it's scary to do if things aren't going well -- but it can help put them on the right track too.)