@jimcaskowski My first thought for an on-line support group is to ask you doctor and the surgeon which group they might recommend. You can also ask the clinical social worker in the doctors’ offices. You can also check with the Pancreatic Association.
Not a recommendation for you, but my cross-the-street neighbor had a Whipple surgery done. He said that the post op was kinda rough, but after that he was fine. When I last saw him before he moved I asked if things were still OK. He replied that he had just ridden his bike up to Nederland, one of our mountain towns!