Welcome!

As you know by now, MG is pretty unpredictable. Unpredictable from day to day, person to person, within a day, over a season or two.....you get the idea.

Coffee can act in the same way as Mestinon (though not in any way to the same degree). All you can do at this point, is what you are doing.

It helps to keep a 'journal'. Something you can just record what meds, what reactions, etc versus your activity level, the time since last IVIG....just notes that might help you pull together a profile of sorts for what you are experiencing. It could help you and your neuro over time.

Again, welcome and feel free to ask questions....this is a great community with a wealth of knowledge.