In testing TMax 120 film, I found the following use/development times adequate for full exploitation of the films density curve;(posted 9239 days ago)Just expose it at ISO 100, then develop the film using regular TMax developer 1+4, for 7m30s, agitation during the first 30 secs, then every 30 secs.
You might give it a try, exposing the film at ISO 80 for even better results.