President Trump has nominated many federal judges for Senate confirmation. As this list from Wikipedia shows, there is a huge backlog of judiciary nominations.
For instance, only 20 judiciary nominations to the US District Courts are confirmed but there are ~75 nominations pending before or reported by the Senate Judiciary Committee.
Senate Majority Leader Mitch McConnell has mentioned in an interview with NPR that confirming judiciary nominations is a "top priority":
"There are over 1,200 executive branch appointments that come to us for confirmation, and among the most important — in fact, I would argue, the most important — confirmations we have are lifetime appointments to the judiciary."
"It would be a top priority and we would certainly move to confirm, if a vacancy occurred."
However, only 1 or 2 judiciary nominations are usually confirmed at once.
So, why is it not possible for a large number (i.e. >5) of judges to be confirmed at once? And is it possible to confirm all ~75 nominations to the US District Courts before the end of the current session of Congress?