For in loop terminates on its own after about 8 hours, where to set?

Question

cmd/bat

Launched batch processing of several hundred thousand files. The cycle ends after about 8 hours without completing the processing of files. Where can I set this limit so that it works until the victory?
for %a in (*.txt) do stat.exe %a

Answer 1

Break this task into several.
Each task is a list of files (let it be a thousand)
After completion, delete this task (a file with a list of files)
such cases