Autofill Dates

Hello! I am creating a time sheet for my law firm that was previously an Excel. The clerks would just make a copy every week and fill it out. We are switching over to Adobe Form. How can I design it to where when someone puts the Sunday date at the top as the "Week Ending", it will autofill the other dates. I've tried a couple of solutions I found on here but nothing has worked. Thank you in advance!
