PDF - Autofill Time Sheet Dates

Hi there. I am creating a weekly time sheet in PDF format. I am trying to have the dates autofill based off of the week ending date I will be entering manually. I am new to PDF and wrongly assumed the coding portion of it would be like excel. lol I have named the dates as shown below.

Sunday is my week ending date which I will enter manually.

Mondays Date

Tuesdays Date

Wednesdays Date

Thursdays Date

Fridays Date

Saturdays Date