I understand, fatigue can be one of the absolute worse symptoms. It's doubly worse because others simply can't understand unless they've experienced it firsthand. I'm glad you understand how Modafinil works, a lot of folks take it and think it will drastically help without understanding it (more about that here https://multiplesclerosis.net/living-with-ms/perking-up-with-provigil). There aren't a ton of other great options, although some people are helped by trying adderall. I find that keeping to a routine helps me a bit, I also try to make the most of the good days and try to cut myself some slack on the tough ones. Other than that, I do my best to educate those close to me about the disease and about fatigue so they can have a better understanding. I know those don't sound super promising, but I think when it comes to fatigue, attacking the problem from multiple areas can really make it more bearable.