For those who don't use the Index scale, how are you Entering body fat percentage?

I just switched from fitbit to garmin, I'm a little shocked that I cannot enter my body fat percentage in Garmin Connect but must use the Index or Index S2 scale to record this information. My scale works perfectly fine and I don't want to spend $150 on new one.

Is there a third party app that integrates with Garmin that will import weight and BF%? My immediate fix is keeping a manual record in excel and importing to Garmin as a CSV file.