No personal experience here, but I don't see it being over difficult to draw up into an oral size syringe if it was mildly low temp warmed to viscous state ? Possibly dish/beaker/whatever on a heating pad ?
Or maybe you could draw up into a SSTB easier and deposit it into the syringe then put the plunger in ?
That's what 'I' would attempt if it was I, since I wasn't able to quickly find anything on YouTube titled specifically regarding the process.