@Val123 No idea. I’m guessing no. I can probably find out. If it were me, and I felt compelled to “follow” Jewish law (I put it in quotes because I am not religious, but like some of the traditions and rituals, so I might choose to follow a rule losely, my own interpretation of it, although generally I do not follow the rules) but if I decided I was against cremation for my own burial I would buy a plot, bury my leg and later when I die bury my body on top. I think the ritual of burying the limb might be good for the grieving process? So the question left is do you mark the grave? Jews, when they die, bury the body within a couple of days and then do a “unveiling” within a year. The unveiling is to unveil the tomb stone or grave marker, and the people attending would leave a stone on the marker. Usually the close family members return for the unveiling.
But we would have to ask an orthodox rabbi to get the real answer…this is just how I think of it, don’t consider my answer to be an offical Jewish answer by any means.