No problem, there are a couple of different freewheel mods. If you are comfortable with soldering I like the V2 mod since it doesn’t need more hardware. Otherwise you can do the V1 mod with an extra relay.
The Wiki has some info and a video of the V2 mod at the motor · AgHardware/Boards Wiki · GitHub
This thread also has some good info Motor wiring to prevent back feed Cytron - #32 by m_elias
If you do the V2 mod you will need to make sure you have the “pwm 2” wire connected to the Cytron connector and that your board provides this pin. I’m not sure what board you are using, but I believe most boards support the PWM2 pin.
The two motor test buttons on the Cytron will no longer work unless AgOpenGPS is enabled after the mod (I never use the buttons normally so not an issue).