Can you post pics? How many eggs? When were they laid? Have you candled to see if they're viable?
I don't keep geese so I can't say for sure but some breeds share nest duty. I don't know how normal 2 months is though.
Not sure exactly, but I think incubation time for good eggs is around 28-35 days. From what you've posted these are well past that. I would definitely check them for viability. They may be infertile. In any case, I can't imagine it's good for him to be sitting this long.