Prostate further forward tips?

I have a progasm ice and I can kinda feel some things just leaving it in and following the breathing or muscle exercising people recommend here. But I’ve recently noticed that when I put something like a rolled up towel between my perenium and the tab it feels MUCH better and I can kinda grind my hips and get results.
I think my prostate is just further in than most like towards my penis instead of upwards. Does anyone have any tips or a better model for this? The towel method kind of works but it’s not the most comfortable or practical method.