Optimized charging not working

Hi, I still have problems with optimized charging not working after about 20 days of usage of the device. It only kicked in once, even if my routine is always the same with just few minutes of discrepancy between different days. I have the option turned on as well as all the location settings needed, and I use an original charger and cable. My address is set and it says the place were I charge the phone is 2 meters away from the place I set on “Home” trough the Maps app. Any ideas about what the problem could be? Thank you in advance.