I figured out a solution. The solution to this problem is:
- Right click on the Task Process (the Feedback process in this case) and click on Properties.
- In the properties window locate Parameters for "[Feedback]" section.
- Set OverDueRepeat as Monthly to set the 30 days-ish period.
- Set OverDueRepeatTimes as -1 so that it sets as infinity and repeats overdue action until task is completed.
- Then again in the properties window locate Parameters for "[these users]" section.
- Set Duration as 1, and DurationUnit as Monthly for 30 days over due trigger.
- Then navigate inside the Feedback process and click Change the behavior of a single task.
- Locate When a Task Expires step.
- Add an Email action in that step to be sent to the Client.
This was my solution to this problem while confining to out-of-the-box requirements.