Taka-sama
This is Kawaguchi Hidetoshi. This is a humble answer to the question.
Regarding the Nichiren sect, I know there is no doubt that it is important to work by reciting the Lotus Sutra and reciting the title of the Lotus Sutra, but since it is not a specialty of humble life, I can't go into too much detail.
However, there is only half left until the Higan period this fall, so when I did a little research on the internet, I was able to find the stages of the Higan memorial service that seems to be in the Nichiren sect as shown below. I know if it will eventually be confirmed by Motoyama whether it is official or not.
Depends on the Higan memorial service ceremony
http://www.osoushiki-plaza.com/library/shuha/higan.html
If you look at this, I think you can see that the work is centered around Hokke Sutra convenience goods, Hokke Sutra, Nyorai jurohin, and chants, which are regarded as particularly important in the Lotus Sutra.
Of course, it would be nice if everything could be formalized as it depends on this ceremony, but I still think it would be good for the head office to officially confirm official opinions, such as how far work can be omitted for people at home, and what the details of the formal transition will be.
※Additional note... I was taught by a member of the Nichiren sect.
References to the Munesei Memorial Ceremony and Kaiganbun... Modern translation of “Higan Kai Kaikōmon”
http://www.genshu.gr.jp/Local/Tokyo_W/kikanshi/No11/kj11_a.htm
According to Obon... it is one of the remains of Nichiren Shonin called “Obon Goshoto,” and it doesn't seem to be a sutra in strict terms.
During the Ohigan period, it was said that “the spirit of taking something one step ahead of your usual self is important,” and if you add something to your daily routine, for example, at work, add sutras from sutras more than usual to recite sutras, or add reading a suicide note before the subject, then “Joseon Shukyo” would be good too. Just for your reference.
Kawaguchi Hidetoshi Gassho