Your fatigue is wrecking everything

Questions when exhaustion is running your life

Could depression, thyroid, low B12, low vitamin D, or sleep apnea be contributing? Should we check those?
Could my current DMT be making fatigue worse?
If I'm on an infusion DMT like Ocrevus, could my fatigue be worse in the weeks before my next dose (the 'crap gap')? Should we schedule earlier?
Are there medications that help with MS fatigue? What are the trade-offs?
Do exercise, diet, or sleep changes actually help MS fatigue — what would be worth the effort?
Is there an occupational therapist or fatigue specialist you can refer me to?
How do I tell if this is depression versus MS fatigue — or both?
How can I document my fatigue for work accommodations or disability?