One reading is enough however if you must then you must.
The secret Is to stay positive and allow things to unfold, trust is another word I would use, trust that the reading is unfolding in your life as it should.
Being uncertain about the reading or readings you receive can put blocks in the unfolding of the reading in your life but that's fine all it means is that you'll most likely have to wait a while longer than people whom understand manifestation more than yourself.
Stay positive and allow for the reading/readings to unfold.
Life is measured by how much one loves. The more love one has, the more abundant life is. Amen