Thank you for the clarification @Wesley_Gross!
As it stands, there isn’t a feature to remind or make a field mandatory in a task. There is an existing thread in the #productfeedback category regarding this topic: Required field to be filled in before allowing a task to be "completed". I would suggest you to add your comment and vote!
In case you have missed it, I would also recommend you to have a look at Approvals, a new type of task we have recently launched: https://forum.asana.com/t/upcoming-product-update-a-new-type-of-task-is-available-in-asana-meet-approvals/72608. You might find it helpful 
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Please let me know if you have any follow-up question Wesley! Have a great weekend!