Basically, on meds, you'll -ideally- do therapy twice. Once on meds to get through it, and once off meds to get it solid.
Like being a badass pool player when drunk, and sucking at pool sober. Have to practice both when sober and drunk to master the skill in both states of mind. Or doing PT on crutches, and then PT after you come off the crutches.
Using the smallest dose, or intermittently? Can reduce the twice to once & a tune up. Saves time, is all. But only if you can get through it to begin with.
To use random numbers... If it take a year -on meds- the first time through, and 6 months off meds the second time through? That's a helluva lot faster than if it takes you 5 years off meds the first time through. So it's a bit of a balancing act, as to what's best for your life both short & long term. Lowest level is generally best. What the lowest level is? Varies a lot person to person. Some people don't need them at all, some people need them badly but don't tolerate them, other people need very low levels, others very high levels... And ALL of them are using the lowest level possible for the, individually.
One of the risks with high levels is that these are short term meds. A lot of people make the mistake of "My life Is great now, thanks!" & discontinuing therapy... But then the meds stop working (again, short term meds), and then they HAVE to go through therapy without any assistance of meds. :wtf: When, if they'd done lower levels to begin with, or even high levels Round1 & stuck with it for both 1&2, they'd be off meds AND their life being great... Instead of dealing with symptoms as bad as they ever were, plus med rebound, minus any meds to help out.