Adaptation to progressive glasses can long 2 weeks, during which going down the stairs, especially mechanic stairs, should be done with the head tilted down. Nevertheless, reading should be done with the head tilted up.
The oblique gaze, mostly used when looking to the back mirror of the car or when driving backwards, will be difficult. The solution is to tilt the head more than usual.
In case of a too difficult or too long adaptation, longing more than 2 weeks, do not let the glasses to be changed before making an appointment with your Eye Doctor for their verification.