Foam Walls

[Achebe]

Between creamy silences,
there lives a hungry nothing in my brain.
It's strange, really,
that these lonely white walls don't
sing.

I enjoyed reading this piece.
The first line is a delight. After that, I wouldn't suggest trimming - the "there" gives a nice extra syllable to L2 (just "sounds" better in my ear).
the "really" is pure filler. L3 needs to be rewritten.