Seems like we are talking past each other.It doesn't make logical sense to me unless there is some magic in the starch that makes it more potent.
So maybe I am taking too much undiluted oil and I need a few drops rather than a whole tsp.
Am I making sense?
There are a couple of factors here.
One is the strength of the oil which doesn't matter to you yet since you are using the same oil to test both straight up and dissolved into a powder. But, once you figure out if the powder version is indeed more efficient there are likely ways you can make your oil more potent for the same volume and therefore possible need even less volume per dose. But that happens on the front end when you make your oil.
The second is whether or not the powder is more effective at being absorbed by the body and therefore requires a lower dose for the same previous effect. If that's the case, you'd need less oil per dose. And, if you can make your oil more potent than the original recipe calls for, you'd need an even lower dose still.
So, first is finding out if a smaller amount of oil in the powder gets the results you want.
So, write out your recipe and we can math it out.