A dashboard feedback survey asks regular users whether the first screen after login helps them start work. This template takes under a minute: a 1 to 10 usefulness score, the parts they look at first, and one open question about what they never use, so you know what to keep at the top and what to remove.
It is written for the dashboard itself, as a popup for users who have seen it often enough to judge. Target the dashboard page and returning visitors with at least 10 visits, so new users who are still learning the screen don't answer. The same survey also runs as a link in your product newsletter or as an email from Usertick to active users.
Usertick reads each written answer, gives it a theme from your list and a sentiment, and marks ideas and complaints. Results shows the average usefulness with a column per step, the share for each part of the dashboard and the answers about what people never use, each against the period before.