Depends where you're flying.
You should check the Jepps / RAR for all flight buddy.
Exemple, UK airspace, 500ft/min minimum descent max 8000ft/min climb. As it is not referenced the minimum for climb we assume it's the normal cruise climb of the a/c, except if the controler asks you to expedite.
In Belgium, Dutch, German, basicly central europe we should maintains 1500ft/min descending. But if you keep 1000ft/min they will soon tell you what they expect.
Unfortunetly, flying is not just for the fun. As Pro we need to read the books and the forums of course. We learn a lot with each other. I believe that's the all point in being a Pilot. Flying and changing experiences.
Regards