Display End Date as of Start Date

My Airtable has two columns: Start Date and End Date. When I use the calendar to select a date, the default for both Start Date and End Date is today. What I would like instead: After I select a Start Date and I click on End Date to select a date, display the start date rather than today.
Reason: I pick a start date in the future (maybe months, years in the future). The calendar view is helpful to ensure I select the right day. When I pick an end date, that end date must be after the start date. With the current process, I must first tab through the calendar to the start date and then continue to tab through the calendar to the end date.