Hi Lisa,
I also feel uneasy about the abruptness of cuts in your prescriptions.
You could see for example
http://neuromuscular.wustl.edu/mtime/mgrx.html
about pred tapering, azatropine latency and Mestinon dosage...
I also had a severe generalized MG at the beginning and apart from pred and Mestinon, Plex works wonderfully for me contrarily to IVIg.
I hope you quickly get more appropriate prescriptions.
Maurice.