no problem PN! glad the zinc helps w/ your crohn's - that's an intuitive one from my perspective
see if you can bump up the magnesium to 600mg per day total - 200 a day is well below your typical recommendation for an ms patient. if you ever can get bloodwork, make sure that serum magnesium is at least 0.90 mmol/L.
and in case mag's not the whole picture, you might need to check your serum ferritin to make sure your iron status is okay.
you stay properly hydrated, right? just sort of thinking out loud re other causes of fatigue. but, do try bumping up the mag intake for a week first. hth!