Alright, so far I've done two extractions of 50g MHRB using Nomans tek. Everything goes smoothly I then put it in the freezer for a day and see some very nice white crystals at the bottom of the jar. So I take out the jar from the freezer and let it dry. After it's dry I scrape the crystals and get such small amounts when i scale it! 30mg from each jar (4 jars total) if I'm lucky. I just don't understand how I see a bunch of crystals then when I scrape it, it comes out to be such a small amount with these two extractions (100g MHRB) I have come up with a total of around 200mg! Any help? Everything is smooth until I scrape the crystals.

Are you immediately pouring off the solvent into another container when you pull it out of the freezer then letting the dish with the crystals dry out? It sounds like your dmt is dissolving back into the solvent or something.

You could always just try evaporating the solvent completely instead of freeze precipitating. Then you can just recrystallize the resulting dmt to further purify.

I sometimes do this if i'm having issues with the freezer.

That's exactly what I do. Pour it out immediately into another container and let it dry.. I think you're right with it dissolving, I don't see any other reason for it to go from all crystals to a tiny amount.

With evaporating do you mean I pull the solvent, put it in a jar and instead of putting that in the freezer I just keep the lid off and leave it like that somewhere warm overnight?

Edit: Would that also give the same yield whether in the freezer or not?

as soon as you see the white loveliness crash out and sit on the bottom pour the solvent off leaving the spice. It will stick to the glass. You can Evap the pour off but you wont get much from that. Let the xtals fully dry.

and make sure your freezer is as cold as it will go.

I had a problem similar to yours with my extract.(Nowman's Tek)
If you can put some bags of ice(I used giant freezies haha) around your jars to transfer the cold better then get ready before you even pull the jars out of the freeze maybe do one jar at a time. Pour all the solvent through a filter and in another clean container and evap down to at least half it's original volume then freeze again.
If your using mason jars they can be kinda hard to dry quick enough so some of your crystal is probably re-dissolving. Use square/rectangular glass food storage containers they are easier to dry and scrap clean.
you could also pour off your solvent then place your jars back in the freezer upside down till they dry completely but this will take a bit longer but no risk of crystals loss.
I just did an extract using Nowman tek and got 1.5g of spice from 117g of mimosa so the tek is sound.