Hi Maza,
It sounds like you are getting back on track with the changes to your treatment. Good luck - I hope the side affects continue to improve.
Regarding Pilates, I am not sure if you have come across the Local Services Directory on our website as yet? If not the Local Services Directory helps people find breast cancer-related support and services by location or type of service and the Pilates services you mentioned above you should be able to find in the Directory!
Follow this link and search for programs in your area. I think there is an Encore program in Sydney which may be good for you - http://www.bcna.org.au/sharing-support/find-services-your-area
Just shout if you need more information or support.