Nikon D5600 Reference Manual page 157

A
Adjusting Shutter Speed and Aperture
While exposure lock is in effect, the following settings can be adjusted
without altering the metered value for exposure:
Mode Setting
Shutter speed and aperture
Programmed auto
(flexible program; 0 120)
Shutter-priority auto Shutter speed
Aperture-priority auto Aperture
The metering method itself can not be changed while exposure lock is
in effect.
131
P, S, A, and M Modes