Aiming Wormholes

[Radar]

This is probably the way it would have to work, assuming wormholes are possible at all and aren't ruled out by whatever theory of quantum gravity turns out to be right (which is extremely likely imo, nature abhors CTCs). One way you can deal with this as a sci-fi author is to make up some principle that causes wormholes to collapse if you create a pair of wormholes (or a network of them) that allows for backwards time travel.

And there would not be all that much making up in it, since it is still under heavy debate with strong arguments that a bakward time travel would result in a collapse due to a single photon doing loops through the wormhole. Unless there were some new developments I am not aware of.