My experience in Copenhagen last summer would make me concerned about making a flight to the US that early.
Disembarkation was disorganized after we left the ship. If I recall correctly, it took us about 20 minutes to find our luggage. The ground transportation area at the cruise terminal was chaotic at best. I don’t recall many cabs and buses for the airport were intermingled with buses for hotels with no signs indicating which was which.
It took us about 45 minutes to check in for our Delta flight, despite using the priority line. Passport control was a zoo. I would guess most of this was caused by lack of airport workers post Covid, but the experience made me vow to avoid Copenhagen at all costs.