Update G7_Grace.md

docs/Dexcom/G7_Grace.md

@@ -12,7 +12,7 @@ Using each sensor for the full 10 days allows the extra 12-hour grace period to
 2- **Extended run time**  
 You can choose to use each sensor for the full 10.5 days instead of 10. To do this, if you start a sensor at **7:00 AM**, you must start the next one at **7:00 PM**. This means you’ll alternate between starting sensors in the morning and evening. By using each sensor for 10.5 days, **9 sensors will last a total of 94.5 days**.  
 
-3- **Presoak**  
+3- **[Presoak](./SubsequentG7.md)**  
 You can insert your new sensor while the old one is still active. For example, you might insert your new sensor at **7:00 AM** but keep the old sensor running until **7:00 PM**. This way, when the old sensor stops working, the new sensor will have already been active for several hours. Since readings from a new sensor can be unstable initially, this method helps ensure more reliable data by allowing the old sensor to remain functional while the new one stabilizes.  
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