Which of the dozens of ethanol recovery threads have you read?
See Eg See: Using moonshine still for evaporation and Who is king of EToH Recovery?
Show us your still…and explain why you can’t use that for solvent recovery…
Because your crude is then stuck in there?
Add a pour spout. Leave a little liqour. Finish purge while decarbing.
Why would you need a vacuum still for edibles?
You need that decarbed anyway. Nobody sees the color.
If the 15gal still you built is too big, make a smaller one. If you want to add vac, do so. The more you suck the colder you need to get your condenser. Otherwise you loose solvent.