Update add-cgm.md

Updated Remote Upload from Loop to clarify the default off state that causes people with diabetes using Loop to not have CGM values in Tidepool Web or Nightscout if they do not send CGM data from another source.

Author: loudestnoise

docs/loop-3/add-cgm.md

@@ -52,7 +52,12 @@ Some people use Dexcom Share to feed their remote services. There have been outa
 
 This is the reason why there's a comment under each CGM below to select Upload Readings.
 
-![graphic showing upload readings selection](img/cgm-upload-readings.jpg){width="350"}
+This setting is off by default so if you want to ensure you have CGM data in Tidepool, for example, enable this option.
+
+* Tap on the CGM pill in the top left corner of Loop
+* Scroll down and tap the **Upload Readings** toggle under **CONFIGURATION**
+
+![Toggle for Upload Readings in CGM Settings](img/cgm-upload-readings.jpg){width="350"}
 {align="center"}
 
 ### Dexcom G5, G6, ONE