Like others said, will depend on the school.
But I’d point out, anyone who gets into more than one school has turned someone down.
And many kids and families really fret over that decision - wondering, was it right?
If they’ve been there two or three weeks, I don’t see how you could possibly make that assumption at this point. Who is to say they wouldn’t be struggling at the other school either?
I would let the semester ride out - are there social issues or academic issues? Lots of kids have bad roomies or can’t find friends.
For many it gets better….but going elsewhere isn’t necessarily the solution.
I think you made a commitment and it’s a premature discussion. You may think you know - but do you really?