  A tripartite quantum network is said to be bilocal if two independent sources
produce a pair of bipartite entangled states. Quantum non-bilocal correlation
emerges when the central party which possesses two particles from two different
sources performs Bell-state measurement on them and nonlocality is generated
between the other two uncorrelated systems in this entanglement-swapping
protocol. The interaction of such systems with the environment reduces quantum
non-bilocal correlations. Here we show that the diminishing effect modelled by
the amplitude damping channel can be slowed down by employing the technique of
weak measurements and reversals. It is demonstrated that for a large range of
parameters the quantum non-bilocal correlations are preserved against
decoherence by taking into account the average success rate of the
post-selection governing weak measurements.
