You can not demethoxylate it (forming DMT) though.
What if you were to peform a HI/red phosphorus reduction as I asked in Post 356523 (https://www.thevespiary.org/talk/index.php?topic=13251.msg35652300#msg35652300)
Yes, you can demethylate it (probably with BBr3), forming 5-Hydroxy-DMT (Bufotenine). You can not demethoxylate it (forming DMT) though.
Almost. After demethylation, you can tosylate the phenol with TsCl, then reduce it with a hydride like LiAlH4 to yield DMT. It's not exactly a sensible route to DMT, but it is technically feasible.
J. Chem. Soc. 3493-96 (1958) (https://www.thevespiary.org/rhodium/Rhodium/pdf/indoles2tryptamines.pdf)
(https://www.thevespiary.org/rhodium/Rhodium/pdf/indoles2tryptamines.pdf)