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