Fix or disable Resting Heartrate

I don't wear a Garmin watch, only use the Edge 1050 as my cycling computer. Because of this, Garmin wildly overestimates my RHR. Some days it says it's over 100BPM. My true RHR is around 40BPM per my Apple Watch. But because Garmin only gets HR data during my bike rides (when I'm actively exercising), it calculates my RHR to be way too high. Any ideas on how to fix this?