Request update request for evaluation

Hi all,

To give you some background: I am organizing a coding support group for internal coding jobs in our company. I am collecting some key metrics in Smartsheet (both on project and on individual level). I have removed those columns in the attached screenshot. Now, I would like to ask the coding support requester to evaluate our group based on the performance per task. I would like to 'Coding Support requester' to fill out an update request or form for the variables 'Evaluation of coding job (1-5 scale)' and 'Please share any feedback that you have'. And I would like them to fill this out 1 week after the project is 'status=completed' on our end.

How can I best do this? Doing this via update request or via form? How can I trigger that the updated request is only sent out 1 week after status = completed?