10 minutes is a good time and shows that you have developed good attunment with this mantra. This mantra is for removing fear of death. The meaning of this mantra is also interesting.. it is a prayer to the three eyed Shiva who
nourishes us, that just as a ripened cucumber separates from the Vine effortlessly, so we also be ready to embrace death and thus become immortal. For most of us, all our fears ultimately boil down to the fear of death. Becoming
fearless is the first step we take to face the challenges of life. This mantra pacifies planet Moon.. so it is beneficial to chant in the night.