That’s an awful lot of cost and effort to launch a ship specifically for ‘rescuing’ another ship that’s not really in any trouble, it’s just a bit slow.

It’s already got the supplies it needs, a set course, and a plan for when they arrive at their destination. It doesn’t really need help.

Then there’s the problem of docking one ship with a second ship that likely wasn’t designed to/with a dock. That’s not a trivial task in a vacuum.

TBH unless they are in some sort of distress; it seems better to let their plan play out. They’ll arrive when they were expecting to, and will have less work to do setting up a settlement when they arrive.