I'm just not so sure that tincture would be that effective. DMT is absorbed better orally than sublingually in my experience, at least when I use pure DMT anyway and I know exactly how much DMT is present. It does sound like you drank more than enough caapi for MAO inhibition. Chaliponga may be "strong", but in my personal experience with it, when I drank 10g, it was a lighter experience than 5g mimosa. I simply would have taken more admixture, but as I said, I don't know how effective that tincture is anyway. Do you have any DMT freebase? If so, the next time you have an ayahuasca failure, if you smoke some DMT, assuming you do have the proper MAO inhibition, it should knock things up several octaves for an hour or so. When you come back down, if you've had enough, you can just stay away from the pipe, and if you could use some more, another hit or two, and you'll be back on the other side of the universe for another hour. This also has a good chance of kick starting and synergizing with the mimosa and/or chaliponga already in your system.
"Science without religion is lame. Religion without science is blind" - Albert Einstein
"The Mighty One appears, the horizon shines. Atum appears on the smell of his censing, the Sunshine- god has risen in the sky, the Mansion of the pyramidion is in joy and all its inmates are assembled, a voice calls out within the shrine, shouting reverberates around the Netherworld." - Egyptian Book of the Dead
"Man fears time, but time fears the Pyramids" - 9th century Arab proverb