Mass Updating Learning Records with Renewal Rules

Summary:

My organization has job specific training with retraining rules applied at the course level. Currently, they are looking to change the retraining rules from 1 year to 3 years and we have thousands of employees already enrolled. Does anyone have a suggestion on how to update the active records to reflect the new assignment rules?

Content (required):

Current course assignment rules: Retraining set every 1 year

New Proposed course assignment rules: Retraining every 3 year

We have employees already enrolled in the course with active learning records reflecting the yearly training rule. Is there a quick way to update all records by HDL?