I have been dx for five years now and have continued to work full time throughout. Not even one day off through illness. Now though, like you I find myself struggling more and more with tiredness.
I have also found that my meds are wearing off about half an hour before the next is due and I'm not due to see my neurologist till August.
I really want to keep working as I love my job and I value my independence. I also earn a lot and don't want to be a 'kept woman', having to ask my husband when I need something.
I am also aware that if I reduce my working hours it will affect my pension and as my husband won't have much of a pension, we will need it.