Ex nihilo

There is a section in your book “the blank evocation” this is quite difficult to get into trance is there a base on how much time i should spend in tgs i go by feelings within my own body when a demon is near. I have felt immense power some years ago and it seems that recently it is barely noticable is this due to your “faculties” not being open enough ? As i dont meditate i just evoke i find it a more potent form of magick hence why i do not meditate “the ritual of materialization” is a paticular ritual to me that is my main practice. Should this be practiced daily?