@JaredCroft provided a potential solution but you need to bear in mind that a CAPA is a process, not a solution. You indicated that in your initial CAPA work, you concluded that human error (oversight) was the root cause. While possible, the true root cause is typically something else. And your corrective action (training) was clearly not effective.
The process to identify the true root causes is difficult and takes an individual well-trained in problem solving / root cause analysis.
Have you talked to the individuals that are required to complete the record? They are in the best position to offer solutions (and if it’s their suggestion, they generally take ownership).