ESP32-S3 Core Board - Disabling LEDs to Lower Power Consumption

[twostar]

This is just a guess but from the circuit diagram there's an LED SPD and LED LINK output going to the HR911105A ethernet jack, you could cut the traces on the board to disable them.  However I doubt it'll make much difference, HanRun document the power draw of the LEDs as 20mA at 2V which is probably insignificant compared to everything else on there.