How Splunk collects data after a specific time

[spl_stu]

A file directory needs to be collected, but there is a large amount of historical data in the file directory. If I currently point to collecting data from the last three days, is there a parameter to control the collection of files after the specified time?

[PickleRick]

There are parameters which restrict monitor inputs to reading only recently modified files (https://docs.splunk.com/Documentation/Splunk/latest/admin/inputsconf - see the ignoreOlderThan parameter). But this parameter applies to file modification time, not the event time.