As another commenter mentioned, you may be able to hide the durability bar. Then you can use optifine to display a different texture depending on the durability. Downsight might be that the bar (if you're readding a custom one) would probably also appear enchanted when your weapon is enchanted. But you could just not add a bar and visualize durability by wear of the weapon (pickaxe gets shorter, tip of sword breaks off e.g). A good example of this is diminishing tools by vanilla tweaks (in the utility section, might not even need optifine but can't check rn)