How do I let glow know that my baby is going through a growth spurt?

🌹Jackee🌹 • Mother and stepmother to 5 amazing kids! Im married to the 6th kid lol, we are ttc #6 for our family!.
I've just received a notification that said glow will provide me with insights while my baby goes through growth spurts. I don't know how to log a growth spurt. I actually don't track my baby's sleeping or eating on this app so would I have to start doing that in order for glow to recognize the growth spurt?