As this is a Swyama Siddha Hanuman Mantra it doesn't have to become chanted for a set number of Mantra Repetitions for having the ability to utilize it. Particular worship and rituals and guidelines relating to route, sitting down mat, and counting rosary are usually not encouraged for chanting this https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s