I'm generally skeptical of the purported rationales for sublingual delivery (and therefore don't think it's worth bothering with), because while delivery through the oral mucosa avoids the first pass hepatic metabolism and absorption through the GI tract, (i) the metabolism of 17AA (oral) androgens occurs primarily in the liver; (ii) bioavailability is essentially 100%; (iii) there is rapid absorption by the traditional route; and (iv) there is negligible justification based on reduced hepatotoxicity, since first pass is a "mere blip" for 17AAs - the liver's rate of blood flow is ~1 L/m and 17a-alkylation confers half-lives in the order of hours with a relatively low Vd (volume of distribution), thus the liver is exposed to high concentrations of the parent androgen regardless of sublingual delivery (this applies as well to "injectable orals").
Sublingual delivery as a method, if used, probably (except for perhaps stanozolol) does derive benefit with 3 - 4X (e8h - e6h) daily administration (this is the case for several commercially available 17AAs even via the oral route, e.g., Halo is prescribed to adults in doses of up to 10 - 40 mg daily in 1 - 4 doses, and its biological half-life is a mere 9.2 h).
Personally, I just use 17AAs as designed; down the hatch. In the cases of Anavar, Halo, and Anadrol, I do take them ~45 min - ~1 hr before training for their apparent increase to neural drive (i.e., strength; though I do not exclude the possibility of a placebo effect).
If you are committed to experimenting with sublingual delivery, for most 17AAs that you are likely to use, sublingual administration 20 min prior to training with heavy loads is what the pharmacokinetics data (from a cyclodextrin-based testosterone formulation designed for delivery through the oral mucosa) supports. Here, blood testosterone peaked at 20 min and then fell, reaching baseline levels by 360 min (+6 h).