time machine restore specific hidden directory
I have 2 time machine backups being made of my Macbook. They both say their earliest backups are May last year. I need to restore a hidden directory of my home folder (.platformio) from last December which should be on both disks. When I go in to Time Machine and select that directory, I can only go back about a week. I have left it looking for a few hours and still no luck.
a) Should I be able to retrieve a hidden directory?
b) Should it be reasonably quick (less than an hour) to find that backup?
c) Is there a way to specify which disk to search?
It would be nice to be able to create a request to find a specific object at a specific date.
MacBook Pro 15″, macOS 10.15