Stop today function from updating daily

Hello Forum!

I have the attached spreadsheet where I enter the status of COMPLETE in a certain cell (multiple columns). In the column just right of that the date auto populates depending on when the information was entered. If I come back to the spreadsheet a few days later, THAT CURRENT date is there. I am looking for a way to freeze the dates once populated. I do not want them updating daily. Would someone be able to help me with this? I am using the TODAY() function to auto populate the date, but am pretty certain that the freeze fix will come by way of VBA coding (macro). Any suggestions would be greatly appreciated.