The PRN medication wasn't clearly communicated during shift handoff today. How can I retroactively document it to prevent the next shift from misjudging the situation?

During nursing handoff today, a patient received a PRN pain med overnight, but the verbal report only mentioned 'pain is better' without specifying the administration time, pain score, or reassessment. The day-shift nurse almost administered a repeat dose after taking over. I went back to check the eMAR, completed the note, and clearly stated the last administration time and the next eligible…