Any way to save -atk Jaffar?

He can still be used to deal AoE chip damage, but that requires a weapon refine, which is rather expensive (200 dew). He can definitely still work, but if you don't want to invest the dew in him, it might be a better choice to just bench him. I'd honestly wait with using him as LnD fodder, because Sothe is much easier to get.