upekkha100 wrote: “So I’d like to know how one would successfully be able to do this(reduce kama raga)?”
firewns wrote: “For the attainment of sotapanna magga phala, formal meditation techniques are not necessary as one can listen to a desana by a knowledgeable Ariya.”
That is correct: Formal meditation is not necessary (but could be used) for the Sotapanna phala.
But meditation could also be interpreted as contemplation. Contemplation is necessary for any kind progress. One needs to comprehend the “world view” of the Buddha.
firewns other comments are very insightful. When one cultivates sobhana cetasika, it automatically leads to the suppression of asobhana cetasika. Therefore, when one is on the Path, not only immoral thoughts, but also kama raga is reduced (gradually).