Since its first full month of sales in May, it looks like e-tron sales have been declining. According to InsideEVs, Audi delivered only 593 e-trons in August, which was around 2.8% of all Audi sales.
Currently, Audi e-tron seems to be the slowest-selling crossover/SUV for Audi as August numbers are:
Q3 - 2,420
Q5 - 6,282
Q6 - 3,408
Q8 - 1,214
e-tron - 593
The comparison to ICE models brings us to an optimistic conclusion that there is huge room for improvement.