wander from something
wander off something

Again his mind had wandered from the test before him.

And so their talk wandered, from one thing to another.

I can read it in his eyes, which have wandered from us.

Sometimes his mind wandered from the point and once he nearly went to sleep.

But let us not wander from the original matter at hand.

We can wander a lot from any good starting point.

You'll wander from one end of this White man's land to the other.

He had a feeling that they were wandering from the point.

But she didn't let her attention wander from the conversation.

I've wandered somewhat from the talk I had in mind.