I never grew aronia but I would give it a try. Any suckers coming up from the ground should be cut and try some light thinning to see if it makes a difference.

They are growing great with minimal demand, the only thing they need is water. Two years ago the berries were as big as blueberries, but last year was really dry and they were almost dried wile being on the plant.
If you need any I could ship them to you.

Thanks for offering but I will be rolling in berries very soon. I have strawberries and raspberries also. Enjoy your aronia berries and good luck.