It's possible, BTCRecover have feature which accept password list file. See this documentation page, https://btcrecover.readthedocs.io/en/latest/passwordlist_file/. Although your code to generate the file could be improved since some months have less than 31 days.
yea.. mybad. I guess fixable in 1min:
import calendar and modifying few strokes
But I'm pretty sure now that this is a useless script.
Each time it will have to be rewritten to fit its own values..
Today we need a date in any format, tomorrow we need something else..