Progression of Bile Duct Cancer

What is the progression signs to look for? I am quite a distance from my dad and working so I want to be there as much as I can but I need to unfortunately pick and choose. His cancer is non-operable and he is on pallitive care. They are concerned because they saw some nodules on his omentum.

It appears he is starting to get bloating. Is the ascites the first sign of the end? If so what can I expect…I really want to know how this is going to generally progress.

Ascites…then loss of appetite…then sleeping all of the time….something like that. This is scary for my dad also as he is living it. I want to provide as much comfort as I can give. I was hoping someone could give me a run down of what to expect.