What's the point?
If you're looking at the label, chances are you did not forget the medicine - that's why you're looking at the label, right? A reminder when I'm not looking at the label would be so much more helpful. One that pops up on that display I'm looking at 4 times per hour, the display I'm always carrying with me, the one that can vibrate and make loud noises to get my attention.
A reasonably effective, simple solution to the autopilot problem already exists, no Bluetooth needed:
https://www.amazon.com/Automatically-Auto-Repeating-pill-Medication-Non-Adherence/dp/B004W8EQC4