I don’t like adding repetitive answers but I see some disconnect in the previous comments so here is my input: as an approach controller I expect you to descend at a rate between 1,500 and 2,500 feet per minute.
The higher you are the higher your VS can be without further speed gains. For example, in most cases you can descend from FL180 to FL120 at 2,000fpm without further speed gains, but try doing that from 6,000 to 3,000 and you’ll see the aircraft will speed up. So you must adjust your VS as you descend.
I disagree with the other comments about flaps and even landing gears as a tool to reduce speed during descend. Spoilers are there for speed reduction, if your aircraft is speeding up - deploy spoilers (in flight mode) and be happy. Flaps can also assist but you must know what you are doing as flaps add lift, therefore it increases the forces that take the aircraft up when you are trying to get down.
Furthermore you may want to pay attention to your air speed as well. If you are descending at 1,500fpm but flying at 300KIAS - that’s not a good combination. It will take you way too many miles to come down. Try slowing down first. Also make sure you are below FL180 60nm from your destination when you contact approach.
Hope this helps. Happy landings.