This issue has already been mentioned before and closed - wrongfully so.

While 0.6.0 IS the most active branch of Sodium, many mods that depend on ver. 0.5.11 and are rather popular within many modpacks (such as Cull More Leaves, Nostalgic Tweaks & Nvidium) will simply crash with the newest version.

Xanders Options being available only for a rather niche version of the mod that is still, rarely used is not that great - and I'd be grateful if we could get an alternate version of this mod specifically for Sodium 0.5.11.

Its not possible, Sodium 0.5 has completely different package names which would result in me having to rewrite the entire mod. You should instead bug the developers of Cull More Leaves, Nostalgic Tweaks & Nvidium to update their mods to support Sodium 0.6