Tefillin every day

Hello. A difficult question that has no clear answer. I am copying here a footnote from our new book on roots, in the article on the ninth root: In fact, the source of the obligation to put on tefillin once a day is not sufficiently clear. Ostensibly, the obligation from the Torah is at every moment, and see our article on the root 11 in Ya'evetz's article that appears in note 18. In the words of Chazal, there is no obligation to put on specifically once a day, and the accepted halacha is based mainly on the words of Ulla (Berakhot 14:2): "Anyone who recites the Shema without tefillin is as if he himself bears false witness," see Shulchan Orach 25:4. However, ostensibly, this obligation is not within the limits of the commandment of tefillin, but rather to avoid bearing false witness. If so, then why is it obligatory for someone who has already recited Shema without tefillin to put on tefillin on that particular day? And see in Eshel Avraham (Botshats, ibid., section 5) who wrote that there was an obligation from the Torah every day, and it was not right to be lenient not to put on on Chol HaMoed, since this is a dispute among the Rishonim, and a conclusion from the Torah to the point. In Yerushalmi (Horiyot Pa'a 53) it is stated: "A prophet and a miser can, if they say to you, 'Do not give tefillin today, give them tomorrow.' You will hear them say, 'Tal, walk in them all, not just some of them. You have made them void that whole day.'" The baraita demands that only if a false prophet and a miser seek to pass on a complete mitzvah are they liable to death, and as an example, the cancellation of one day's tefillin is given. This means that each day is a mitzvah in itself and the cancellation of one day is considered a cancellation of the mitzvah. It is true that it is possible to reject that it is the law if they say not to put on one hour a day, and the language of Yerushalmi does not necessarily say so, and before that, similar language was used there about eating a handful of milk today and two the next day, although there is certainly no definition of a day in the prohibition of eating milk, but the context is there 27 and consult the commentators. And see the article by Yam Ya'evetz, Tefillin – Le Zichron Pnei G-d Tamid, Yarhon Ha'Otzar 4 (5777), pp. 111-112.