If I remember correctly, sublingual DMT ingestion does not work.  It apparently takes too long for the DMT to absorb in your bloodstream and reach your brain.  The body seems to build up a tolerance to it rather quickly.

The only time I have read about this working is when absorbed in DMSO and then used sublingually.  10mgs had one user blasted off rather quickly.

If you do get it to work SyZyGyPSy let us know dosages and technique.  I would be quite interested.