IME there is no tolerance at all with oral dmt usage, both pharma or ayahuasca. Participating in rituals in successive days does not diminish the effects, and later rituals can even get stronger with same doses (maybe from being sensitive/tuned in to the setting?). Also the same for pharma, I have used more often then once a week for sometime and felt no diminishing effects.  This was all done with harmalas for MAOIs, not moclobemide.

Regardless of physical tolerance, I think its a key that one tries to work hard in integration of experiences. Just doing it often without minding how to digest it will inevitably come back to you negatively (maybe having weak or negative experiences).