Yoel,
I had sent an email to  Przemysław Szpilman at the following email in 2016 beisolam@... with a similar questions. He was kind enough to research and respond.
If interested, there is an article about him on https://www.newsweek.pl/polska/przemyslaw-isroel-szpilman-straznik-zydowskiej-pamieci/zw2lpbs

I visited this cemetery in 2018. There is much restoration. But even with a map,  had a very difficult time locating metsube's. This article may also be of help
https://bloodandfrogs.com/2018/07/okopowa-st-cemetery-maps-and-statistics.html

Shana tova
Nomi Waksberg