I have moved away from asking people to chant X hours of daimoku. Call me crazy if u will, but i am advocating that whilst a problem remain unsolved, one ought to keep rattling on the all-empowering invocation.
Start chanting when u wake up from your sleep. Chant as u r doing auto-pilot kind of tasks (chores): walking, running, showering, shitting, planning,
Most IMPORTANTLY, rattle on with the invocation as you are making sense of your data n crafting your thesis...