Having experience with debilitating inner sit bone pain, what worked for me is going long(stretched) and low and using your quadriceps more, which may involve moving your saddle forward and even a different saddle that favors that favors that position. Much more of a road like position, but with your hands level or even slightly above saddle height. In using your quads more, pushing hard, that naturally takes pressure off the butt and the hands at the same time. That's how pro road racers can ride with narrow saddles and road bars on narrow tires even on cobblestones, they're exerting so much power with their quads that it rather alleviates butt and hand pressure. It's just not road riders that do that, it's riders of all genres that push down on the pedals hard.
If your quads aren't particularly strong or more like, unfamiliar with loading them up, even simply laying on your back and bending your knees towards you, and raising up your torso, making yourself like a ramp, does wonders.
The general rule of thumb I grew up with as a subjectively ideal riding position, when you're in your long and low position, the font hub should either be hidden or behind the middle of the bar at the stem. This was with drop bars , but it works too with the Albatross bars I have, the middle of the bar is a little forward of the hub when I look down. I have a 13cm stem on the Bombadil, which also has an atypically longer TT and reach than all other regular chainstay Rivs.
I know all that seems complicated, and it need not be..... Just Be Happy and which Way ;)