...the psycho-physical interdependence, ONLY EXIST because we experience it.
Nama-rupa is experienced due to consciousness (SN 12.10; SN 12.65; SN 12.67). However, nama-rupa can exist when we do not experience it. For example, I do not experience the nama-rupa (minds & bodies) in Alaska or Mongolia however they obviously exist outside of my experience.
Conditioned reality... ONLY EXIST because we experience it.
I have not read this in the Pali suttas. In fact, suttas such as AN 3.136 & SN 12.20 refute this Creationalist belief. I only read this is what Brahma believes, as follows:
The Great Brahma said to the monk, 'I, monk, am Brahma, the Great Brahma, the Conqueror, the Unconquered, the All-Seeing, All-Powerful, the Sovereign Lord, the Maker, Creator, Chief, Appointer and Ruler, Father of All That Have Been and Shall Be.'
How can I apply this to my meditation practice?
What is written in the question is unrelated to meditation practise. Meditation is about developing calmness, peace, good-will, compassion and discerning the causes & cessation of suffering, impermanence & not-self. Meditation is not about believing in Brahma or God that is Ultimate Reality.