How might data be collected for this target response?I'd be interested in ABC data as well as data related to a specific checklist related to process and requirements. Lastly, I would take social validity data for the purpose of finding out why motivation is lacking.
Identify several interventions that might help improve response rates. Place them in order with the least-restrictive at the top so that the interventions may be introduced systematically, adding more restrictive / less favorable interventions after the outcomes of less restrictive options have been measured.

Create a positive reinforcement system, specifically a group contingency that would allow for healthy competition while working together to meet targets, resulting in frequent rewards.