Your welcome 
That video really shows off the Sugarpixel. I skimmed over it & will watch in detail later. I did not see the vibration alert puck in the video but again quick skim. The puck also puts out a lot. I put mine on my nightstand because it got hot some & I didn’t want it under my pillow. When the Sugarpixel sends an alert there is no missing it. My Sugarpixel gets quite a work out with my wild roller coaster ride.
As Liam gets older he is going to take over his own care & you will want to follow him. Have you considered that Dexcom has a follow app? My wife follows me on that app. Also do you have the Dexcom settings for alerts for Rising / Falling fast to go along with Low / High alerts? Those can be set to follow as well.
Best wishes for you & Liam. God Bless
Puck Pic
