Out of everything he did, this was his worst command.
He's in TEMPORARY command of a ship while the captain is on a short term mission. He's asking for a huge sweeping change to the ship's roster. The amount of work it would take to adjust everyone to a new schedule, just to shift everything back when Picard gets home is pointless.
I could defend almost every other decision he made, but this one... This is why he's in the books as the worst captain.
"Mmm let's see, the ship is about to go into a potential crisis situation, yes this sounds like the perfect time to break up a ton of working relationships and give my whole crew jetlag"