Unfortunately, with MS yes as the day goes on your body tends to do the opposite of what you're wanting to do. Standing for long periods of time does make it worse, try to sit down off/on if you could.

Mostly at night. I take magnesium malate. Use a magnesium lotion. If it's really bad in my feet, I wrap a heating pad around my calf or thigh. Also use Vicks Vapor Rub on my muscles.

Yes alot of my symptoms worsen when I'm really really tired

Yes
Shoot i started taking my bath early so I have the energy 😌 🤪

Yes @AnuiCarmel, my burning sensations get worse as the day goes on, much worse late afternoon, evening, night. 💜