Annoyingly, no, I haven't seen an ink-only levelling guide for inscription (I think that's what you meant?). All of the existing guides seem to assume that you'll be making ink from herbs.

Levelling inscription is still ridiculously easy though, just make several hundred of the max level trading inks and send them to the alt. Do the ink exchanges as you need them, as you level up. That way you don't need to know an exact count of "32 midnight ink" beforehand, or whathaveyou. Doesn't take much more time than following a guide, tbh. The only tier where you want to make your own ink is the tier one herbs which are used for moonglow and alabaster inks (silverthorn, peacebloom, earthroot).