When will Callisto be in orbital resonance with the rest of Jupiter's big moons?
we tried to answer to this question in this article:
https://arxiv.org/abs/2001.01106
According to the current estimation of the tidal dissipation in the Jovian system, we expect that Callisto will be captured into resonance in about 1.5 billions of years, forming 1:2:4:8 resonant chain with the other Galilean moons.