... to add a "locked down" mode to 7Sage's interface that ... dark theme, no full screen mode, LawHub's font and line ... collapsing answers, full passage view mode, no line numbers, etc.
Yea on the proctoru homepage it specifies ios and android os tablets are not supported. So long as you switched out safe mode for windows home on your surface go it should be good.
I would remain in a lighter study mode, maybe retaking earlier PTs or review past errors or tricky questions. Managing the nerve first as anxiety at this point might impact your performance much more than not practicing as heavily as before.