How to Make it Easier for a Background Investigator to Contact You

Thank you . Something came up about something I did 5 1/2 years ago. I spoke with the investigator about it. I wasn’t arrested or charged. Just did something ( poor judgement) . I put it so far back into memory that I keep thinking of my information to mitigate what I did. Maybe I should just wait until adjudication , but it seems what I understand it’s best to give clarity as much as you can during the investigation. I already called my investigator once but not sure if I should call him again. About the same topic. Is it ever too late?? This incident wasn’t disclosed bc it was part of a FBI investigation and I was a witness so I only knew it was in my records after they ran a name check on me