Trump could get that done in a few weeks.
Just line up a list of 50 hardcore right wing candidates and ask the Senate to confirm every Goddamn one. You'll get an amendment in short order.
Well, the problem would be increasing the size of the Court to begin with - which would require the House to be on board as well. The only way it will happen is if one party has control of everything (WH and all of Congress). Which may very well be what we're facing if the "blue wave" comes to fruition.
In the past, Biden has recognized how stupid that would be - but stupidity is trending.