Reading your post, I think you shouldn't be working full time.

One of the problems with MG (as I have said numerous times and see again and again) is that you think you can do more than you really can.

MG patients like healthy people can do 150% of what they can for a limited time.
But, they eventually pay a price.

What was 80% effort for you before is now 150% effort (even if you still doing the same thing or slightly less). The fact that you can do it, doesn't mean that you can sustain doing it.

Even if you are a trained marathon runner, you can't run a marathon every day.