Nothing you have said makes me think anything unusual going on. The car is a living machine, it will do what it thinks it needs to keep it in a healthy state and in communication with various things such as mother. It sounds like your TeslaFi settings should allow the car to sleep - so long as you see in the logs that the car is at times either alseep or regularly trying to sleep, then something else is keeping the car awake.
It is important to remember that the car chooses when to put itself to sleep - other things can keep it awake, but cannot put it to sleep.