Turtles all the way down, Plenty of room at the bottom, and all that.
Here are some comments that may help picturing my proposals (by a modest amount, at least). The above are both references to the idea that important things including organised activity can be going on at deep levels of reality, as does Bohm's idea that I quoted: 'meaning is capable of an indefinite extension to ever greater levels of subtlety'. Yardley goes a little further:
An entity is always part of a process, a process always part of a system, which is always part of an entity, process and system, ad infinitum, to zero, and, then, one.
The 'infinitum' is important here, suggesting something of the order of fractality (structures at all length scales), a well known concept in physics. So there are entities, which have two aspects: system, which emphasises structure, and process, which is what that structure can accomplish. There is circularity in that not only do systems give rise to processes but processes develop their underlying systems. More confusingly, an entity is not really a thing but more a 'doing', as I discuss in the essay. The situation is well described in the lyrics of a song by Trish Klein: 'everything changes in so many ways, everything rearranges, some things stay the same'. Here 'staying the same' is an abstraction, as when we speak of a specific person even though there is constant change at all levels.
And why are there these constantly changing but in some ways staying the same 'entities'? That's because there are emergent mechanisms that achieve this: 'entities are always part of a process'.
The above picture, with its many interrelationships, is a confusing one and yet makes quite a bit of sense, whereas conventional QM doesn't. As Feynman once said: 'If you think you understand quantum mechanics, you don't understand quantum mechanics'.