Using Azathioprine long term for MG

Was diagnosed with MG at 65…
Started with Mestinon and Prednisone.
Ocular only..for 4 years took Pyridostigmine maybe twice a year mild flare ups. (Off prednisone)
I am 73 now and still Ocular and now Bulbar(some slurred speech and hoarse voice) This May 2024 ocular flaring up daily. My neurologist has started me on azathioprine and prednisone for 6 months then only azathioprine for probably the rest of my life..
Looking for more information if anyone has been taking azathioprine long term and if it has been beneficial.
Will appreciate any comments.
Thank you 🙏