LOL! I no longer have cats, but when I did, daylight savings time did mess with their internal dinner bell clocks .... the horses, too. It took between 1 and 2 weeks for them to make the adjustment.
Right now it just turned 7:00 am here.
The outside dog won’t stop barking (and I can tell when it is a bark for attention—it is) and the inside dog and cat are following me around, almost getting under my feet as I refreshed my coffee.
They know something’s disrupting the routine and they do not like it one bit!
Tough. They have to wait while I wake up. Don’t want to mistakenly feed them rat poison.