as he was predicted (and got) 4 x A star, we urged him to apply to Oxford (where we went - he had no intention of applying) and then, when he got his offer, to firm it. He very reluctantly agreed after talking to his teachers who said he'd be nuts to turn down Oxford, even though his heart was set on York.
It's hard because is it this pushing sent him in the wrong direction or is he still not quiet settled and by end of year he will be.
I might suggest DS, if he does as well as predicted ,looks at our old university - not Oxbridge but in his area of of the best n country wanting 3 A* - as we loved it but did different subjects but I wouldn't push as he's not us - he is off his own bat is taking a school tip to look at Oxford uni.
We have with DD1 place practical limits on distance - and then suggest older universities and look at how well regarding course is and that it gets her where she wants but keeps as many door open as possible - that gave a short list with her grades and she visited them and chose.
It has to be their choice that they are invested and fired up about - even so she may decide it wrong and try and blame us.
He is not interested in my advice as DH and I 'got it wrong' and gave him 'duff advice' (his words).
He has options, he has people to talk to about this and he's taking control of his future and deciding on best path for him.
It's a recoverable misstep - only a year lost - and this age they start not to listen to parents anyway.
I did this before University choice mainly as I felt my parents had steered me wrong with A-levels - wrong location for me though they did have practical reasons - and wrong subjects and when I realise it was a mistake wouldn't allow changes. I saw things they didn't with uni choices getting around with no car issues as they drove everywhere - but did feel steered away from perhaps a better subject area though-then did post graduate course that put me in that area.
I don't hate them - they did the best the could and being miserable during A-level meant I was more determined to make my choices going forward and I still made mistakes.