Hi @minimia, welcome to Connect. In this video, Dr. Mark Truty at Mayo Clinic talks about the advancements in pancreatic cancer treatment by doing chemo before surgery, which has also be suggested for your father in law.

Other members are talking about surgery and neoadjuvant chemo in this discussion:
Pancreatic cancer—Whipple procedure https://connect.mayoclinic.org/discussion/pancreatic-cancer-whipple-procedure/

It sounds like your father is getting good care and that he has great family support. I agree with @marciakaye's advice to inquire about clinical trials and genetic testing and if they are appropriate for your father. Just having you there to be a second pair of eyes and ears, and to ask questions is a big help. I always like the final question that I ask to be "is there anything I need to know and have not thought to ask?" How is your father in law doing through all this? And your partner?