Copy the content of a log book to use again, and add Comment section availability

We use log books to log performance reviews monthly and for PDPs. We'd like to be able to duplicate the last months review and make changes such as improvements. The only way to do this at present is to copy and paste which is slow and time consuming. Is it possible to be able to copy the last months information and then add to it and change it as the new month?

Or even a section like the Comment section in some of the other areas of People HR, where we can add a new comment to the string and not have to save it again and again.