This is precisely the set of circumstances behind my suggesting the lime/vodka method - they can't stop us from producing our own vodka and burning our own lime, even if both of those are unlikely to disappear from the shops anytime soon.

It's best to minimise the amount of lime used by getting the stoichiometry just right, then there's less solvent remaining trapped in the calcium tannate, and any DMT residue can be recovered with a couple of washes. Fine, powdery sludge is not the sort of thing you want to be pressing, so you'll have to be satisfied with rinsing unless you can get hold of a good vacuum filtration setup and some very fine filters.

Freezing has been suggested as a way of removing water from the tincture, not as a way of separating the calcium tannate. It may help, but the main tool in getting the tincture free of lime and calcium tannate is patience.

Regarding the step where the plant material gets separated from the tincture, this is again a point where the trusty cotton-plug-in-a-funnel trick comes into its own, just as long as you have the time and patience. It's best to let the solids settle out and decant off the bulk of the tincture through the filter/funnel so that the clearer portion runs through more quickly and less of the liquid has to percolate through the sludge and part-clogged filter.

Tannins precipitate from the vodka-strength tincture on cooling, so it bears considering whether you want to filter it hot and filter again after cooling and standing, or let the freshly-produced tincture cool down completely and filter the once, in which case one has to consider whether any significant amount of DMT will be trapped by the tannins. This appears to be an argument for getting the maximum amount of tannin in contact with the lime, or maybe even acidifying the vodka a little prior to producing the tincture.

Above all, it's pleasing to hear of someone testing this out experimentally. I hope you try a few things out and keep meticulous and detailed notes.