Well I don't know how the proxy works at your uni but I wrote a recipe that uses my university's access using the following:
And then I later had to append the proxy to the url so it would re-route and pickup the authentication like so:
That full recipe is here:
https://www.mobileread.com/forums/sho...d.php?t=157692
Anyway I hope that helps, or at least gives you some ideas

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