My default is to turn off every single "notification" that I can, which means dissabling
a large chunk of the standard stock sofware on my phone, and installing alternates, and useing web sign ins rather than apps. When things get chunky and start breaking, I'll go in and manualy do updates, clean house, and throw out the stuff I am not useing.
I have another phone I use as my "hot spot" internet wifi source, which has a broken screen, for which I have a replacement, my plan is to investigate removing the vibration motor completly, and perhaps install a dummy load to keep from getting errors, ie: leave the coil, but pull the counter balance, as ut appears that this is going to be the only way to stop it from vibrating when someone, somewhere, sometime, decided that is non optional.