How does the ecobee drop to sleep temperature when on heat mode?

Just got an ecobee and set up the home and sleep schedules. I like my sleep temperature 2 degrees lower. With my previous thermostat, I had it dial down by 2 degrees 2h before sleep and had the fan run to help cool. I have heating smart recovery enabled, sleep profile fan is set to Auto. Sleep is set for my sleep time (10:30PM). So I'd like the temperature to drop to what I specified by 10:30 PM. Should I let the ecobee figure it out or do I have to intervene if I need it to drop the temperature? In Canadian winter - cannot have AC on.