I think you are partially missing the bigger pix. If u used everclear to make the tincture, you can remove some alcohol, but the remaining alcohol will still be the same concentration, just less of it. That is why it should be "diluted" with food. You can mix the tincture with something like coconut oil or butter then heat it to drive off the ethanol and the THC oil will dissolve in the butter oil . If you add juice or water to reduce the ethanol percent, you will reach a point where the THC oil will drop out of solution and create a cloudy liquid. Not that the cloudy is bad, it just means the THC oil is no longer soluble in the liquid. This is due to the change in polarity of the solution. The THC oil is non-polar (oil will dissolve in oil), water is polar (the oil will not dissolve in water). Ethanol is unique in that at high concentrations it is non-polar, at low concentrations with water, it is polar. Does that make sense? It is chemistry.
I don't think there is a limit on the number of PB cookies one can eat.