Falling on the Face on Shabbat in Times of Distress

Honorable Rabbi, shlita, in these days, which are a time of distress for all of Israel, should one perform the 'falling on the face' even on Rosh Chodesh and Shabbat, according to the words of the Maharam of Rothenburg in his responsa, sign 643, where he writes: "And again we find that when there is an event and a person needs mercy, he should ask and fall on his face individually in every prayer, even on Shabbat, as Rava bar Machsya said, Rav Chama bar Gurya said, Rav said (Shabbat 11a): 'A fast for a dream is as effective as fire for flax,' and Rav Chisda said: 'And on that day, even on Shabbat,' and certainly to fall on one's face, there is nothing wrong with it. But in the community, they do not fall on their faces, and if, God forbid, Israel is in distress, it is permissible to ask for mercy and fall on their faces on Shabbat, even in the community, as our sages taught (Bava Batra 91a): 'They cry out for commerce, even on Shabbat,' and Rabbi Yochanan said: 'Such as linen goods in Babylon and wine and oil in the land of Israel.' His words were brought by the Eliyah Rabbah, sign 131, section 9, both for individuals and for the community, and also the Magen Avraham in sign 288, section 13, and Ba'er Heitev there, and Mishnah Berurah, sign 288, section 26, for individuals [and seemingly also for the community, which makes no difference]. It is also explained in the Or Zarua, laws of Rosh Chodesh, sign 426, regarding Rosh Chodesh, and so it is written in Moed Katan, sign 131, that it is proven in the Gemara that on Rosh Chodesh it is not prohibited and for necessity it is permitted. I would be very happy to receive our teacher's response on this matter, as I have not seen anyone raise this issue.

Permitted, but it is not customary.