Repurpose F4 PoE to use on Rock 3a

Hey there folks,
I have an F4 PoE hat which is not being used, and I wonder if making it as an F3 to use on rock3a is just about resoldering the pins shown on the second picture on the docs https://docs.radxa.com/en/accessories/radxa-23w-poe
Does anyone know if that would be possible and if one can still have control over the fan?
Thanks in advance.