My poodle was dianosed with cushing's at around age 11. The medication can be tricky but worth it! I learned to ALWAYS ClOSELY MONITOR for reaction. The dosage can be cut. (ie: if the dose should be 1 pill, give 1/2am -1/2pm) this worked for my dog and my vet only suggested it after he had several reactions to a full dose. Make sure you have ALLTHE MEDS you need ON HAND! The med can sway the dogs levels quickly.
Your lucky to have the internet, there is alot of info out there, that I stumble upon. Back when my dog got it the only way I got info was by calling a library in Nevada (from NJ).
If I come across anything soon I 'll post it for you.
Larn all you can, monitor closely - it's tricky but worth it my guy got it under control for almost 5 yrs. , he also had an enlarged heart under control for 7yrs. The meds brought down his belly bloat and made him comfortable & happy.
Best of luck to you guys!!!!!!!!!!!!!