Why though? Scrolls are reusable, back in the day when he fought that singularity woman with Leviathan, he used the scroll then asked Medis to recharge that scroll and used it again, now that his mana is 1000 times stronger he can probably recharge it himself or ask somebody to do it for him.
Also isn't Equala said that they need 5 times amount of that bottle to heal oderification, so Akira have to draw 5 elixirs to heal Katia, also he will probably going to save all those people in Stormheim who now became oders too, so i think he will have to use that scroll many times over.