tikitu
Re:RSS Box – RSS for websites that do not support RSS
on Sunday June 21, 2020 @04:32AM (#23590690)
I once made a Python commandline utility for this, which does still work if you can install it with the right (now long-outdated) Python version: https://pypi.org/project/dripfeed/
I don't intend to maintain it further but all source code is available and it's not terribly complicated (all the hard stuff is done by other python libraries).