Hello zigizigi, and welcome.
To answer your question ingestion rue seeds as is (simply crush and wash down) is the surest way to get nausea.
A tea from 3 grams would be less nauseous but the more nausea free method is to extract it's alcaloids, namely harmine and harmaline, via manske.
Manske is a method of extraction with use salt and vinegar a few times to purify the alcaloids and get rid of all those nauseous compound in rue.
So yeah if you didn't already, have a look at the extractions on wiki page, my favorite so far has been the harmalas extraction and separation guide (you don't need to separate them, the mix is fine for pharmahuasca or vaping).
https://wiki.dmt-nexus.m...ion_and_Separation_GuideAnd good luck with your pharmahuasca, it's a wonderful ROA when it comes to n,n-DMT, you're rigth to prepair well for a comfortable journey, the magic is awesome there !
Smell like tea n,n spirit !
Toke the toke, and walk the walk !