As this can be a Swyama Siddha Hanuman Mantra it does not have to be chanted for a set variety of Mantra Repetitions for being able to utilize it. Unique worship and rituals and regulations pertaining to route, sitting down mat, and counting rosary usually are not recommended for chanting https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s