To help with ride only, nothing to do with steering, you can remove a few leaves from the spring pack. Once done, the hauling weight limit will be compromised so keep that in mind. Start at the top, the longest leaf, this is the main one, the second leaf is the main leaf support, both these must be in good condition and stay in place. Now you can remove every other leaf verifying that each leaf is not worn or damaged. I don't know how many you are working with, so you may want to start three down instead of two and see how it rides. Add Teflon liner between each leaf when assembling, ( https://www.speedwaymotors.com/Leaf-Spring-Liner-with-Lip-1-3-4-Inch,2079.html ) , this will really help. Replace the center bolts and use clamps to hold everything together while working on the springs. You might have to bend the spring clamps to account for missing leaves, and you will have to open them up the get the spring pack apart. It's not super hard work, and it will give you a chance to inspect the springs. To keep the same ride hight, add a spacer the same thickness as the leaves you remove to the bottom of the stack.
Adding the liner to all four corner will help so once the front is done, move to the back and add some more.
Joe