IME it took several WEEKS to see consistent improvement and the instructions suggest you keep putting on the alarm for several more weeks until you have I think 2-4wks of dry every single day. The alarm will teach the child to wake up when they sense the urge. DD1 needed the alarm and still to this day often wakes up 1x a night to pee. DD2 didn't need the alarm and never wakes up in the night to pee. IMO, I would not wake your DS up, I'd wait for the alarm to wake him. Otherwise I think you are circumventing the mind/body connection of hear alarm, feel wet, wake up. I think I remember being into week 2 before having a dry night with DD1.
Mom to two amazing DDs ('07 & '09) and a fur baby.
Gluten free since Nov '11 after non-celiac gluten sensitive diagnosis. Have had great improvement or total elimination of: migraines, bloating/distention, heartburn, cystic acne, canker sores, bleeding gums, eczema on elbows, dry skin and scalp, muscle cramps, PMS, hair loss, heart palpitations, fatigue. I'm amazed.