You can not start a fresh log, without deleting all the existing data. Why would you want to do this anyway? Save all the past data for reference and just email the doctor the information, back to the previous submittal. Just remember that you can download the CSV file and edit it, prior to submitting the information to your doctor. You can also run the
"Report Generator" Tool, on the CSV file, and create a really nice report to send to your doctor.