As far as I understand the process, the base-soups task is to break down the cell structure of the plant material so the dmt gets dissolved in the water. pulling with a non-polar solvent then extracts the dmt. maybe you get some more plant fats this way but you could give it a try with a low amount of material first.
NaOH is not environmentally damaging, it will dillute and lose its harmful propterties very quickly.
if you really want to make a difference, think about reusing your solvent.
asked your question in the chat, here is your answer:
dont do it
20:51:31 ‹Thatsthewayitis›you will just waste your DMT containing material
20:52:31 ‹Thatsthewayitis›it will just sink to the bottom, it wont break down, and if it does, it will be very little. it will keep your lye from dissolving all the way too
20:53:02 ‹Thatsthewayitis›then your going to be pulling out all those extra alkaloids in your solvent