Have you got at least a rough idea what the password is likely to look like?

See if btcrecover works out for you: https://github.com/3rdIteration/btcrecover

Or if your own hardware is weak: https://btcrecover.readthedocs.io/en/latest/Usage_Examples/2020-10-06_Multi-GPU_with_vastai/Example_Multi-GPU_with_vastai/