Heh
Not that Democrats shouldn't do literally nothing, obviously, nor will they, but when I read posts like these I have no idea what you imagine they could or should be doing. Swaying public opinion against this? That's already there! Abortion is going to be front and center for this debate, and a majority of the public already opposes overturning Roe. Senate Republicans have made it pretty clear that they don't if what they're doing is unpopular with the public (see: ACA repeal, tax bill, guns), especially since they don't answer to the public anyway, they only answer to their states. Which means the only constituencies that actually matter here are the voters in Alaska and Maine.
As for "Dems should do something, anything, even if it's unconventional and they'd have my respect"... I mean, they DID oppose Gorsuch in a way that forced McConnell to kill the filibuster, which was a historic and unconventional move. People take that as a given when it was something that only happened because the Dems made it happen. Unfortunately, that was the last resort in the procedural bag of tricks, so there is no something left to delay or stop the vote.
I know it's probably easier to accept that there is always something that could be done and the only reason Dems aren't doing it is because they'd rather tsk tsk Maxine Waters about civility... but the actual truth is that there is nothing that Senate Dems can do other than keep their own caucus in line - which still wouldn't change anything. The power to stop Trump's next appointment lies in the hands of Collins, Murkowski and their states' voters, and no one else.