Old house problems.
I think what used to bother me even more than the dirty glass was the dirty and mildewed ledges on the windows. We did end up replacing out 1925 original windows shortly after moving in years ago. Now I’m a different house.
Can you use the windex outdoor spray stuff you hook up to the hose for the outside panes? And pair that with what you can wash inside by hand? We had lots of windows in that house too and while I loved the natural light I hated the time it took to wash the windows!