Rambam is strict in the laws of Shofar 2:7.

At first, it is about a Sabbath that is not a Sabbath. There, it is about learning to make a tza'ot. They did not allow the adult to deal with this (because it is a tza'ot with the hands, which is forbidden by the Torah, and there is no educational law here because we are talking about a minor who has not reached education), but they did allow themselves, meaning that there is no obligation to prevent them, because according to the law, a minor who eats carrion is not required by the Jewish Law to be separated. The question is why in the Sifa that deals with the Yot of Reh himself, they did permit it. It seems that he understands that there is no prohibition here. Therefore, if he reached the age of enlightenment, then even a mitzvah is required, and if he did not reach the age of enlightenment, there is still no prohibition. Why is there no prohibition here? Apparently because the takiya itself is a shvut, and the Yot of Reh did not decree this shvut, since in any case, takiya is performed on the same day. In other words, the takiya on the Yot is not postponed, but rather permitted. And of course, there is no specific prohibition in this Yot of Reh either. Question 3 is not a question unrelated to this. If you are talking about those who have reached education, then you are talking about the law of education and not the law of hand-slapping (because this also exists in very young children). But from the law of education, there is also an obligation to educate them and teach them to poke, and this rejects education to maintain reverence. But in my opinion, there is no need for this because the Jewish Law itself does not contain reverence at all. The last way I suggested is probably the way of the Rabbi there, who writes that they also permitted it on the Sabbath adjacent to the Yom Tiv, and there is certainly a return there: But the Baraita says that in a child who has reached the age of matzot education, his father engages with him so that he may learn, even on the Sabbath that is adjacent to the Sabbath, as they said (Sukkah 44): A child who knows how to twirl his father takes a lulav for him, but a child who has not reached the age of matzot education, they themselves twirl it on a Yom Tov, but not on Shabbat, and when his father does not engage with him.