Welcome to the Nexus, SecondSelf,

Psychedelics are quite strong medicine and can be wonderful eye-openeers, tools or aids in many respects. The experiences are with some comparable, sometimes, and other times no... i'm not sure one substance can prepare you for another, nor that one experience can prepare you for the next, especially when it comes to DMT... but also for example with mushrooms.

If you are determined to try DMT I suggest trying DMT... starting with low doses. slowly touching upon the altered state of mind ... maybe vaporizing small amounts in the beginning. If you are interested in mushrooms, try them, by all means, but rather for the experience in itself... because they are powerful and worth the experience, and they are much more than a "training" for dmt or ayahuasca.

Generally I like the idea to see where life takes you naturally, so I think you'll be fine and well on your way to wherever it is the universe wants you to be.

Take care