Data Validation and Auto Fills

[NotKentClark]

I have a spreadsheet I'm working on where I need to track daily sales, that connects with a commission structure. The current table I have shows all days of the month (29 days this month), I have created a Data Validation drop-down list with other months of this year.

Is there a way, that when I select a different month, say March I can have the cells with the February dates automatically adjust to March?

February	March
Monday, February 3rd, 2020	Monday, March 2nd, 2020
Tuesday, February 3rd, 2020	Tuesday, March 3rd, 2020
Wednesday, February 3rd, 2020	Wednesday, March 4th, 2020
Etc.	Etc.

Any help would be appreciated!