First off: do not excercise to the point of muscle breakdown as a 'normal' person would. Doing so will only hasten your physical deterioration. Range of motion is good, pool is great.
Looking for an edge with supplements, treatments and various protocols is good, but be cautious. There are snake oil salesmen who will love to prey on your vulnerability.
At this time there is no (zero, zip, nada) cure. There is one (1) recognized treatment in the US. There is no one-size-fits-all, sliver bullet for ALS. There are many possible treatments but there is no guarantee that what works for me (mmj) or for notBrad (Mmj, AL-C, LS, etc) will work for you.
I tried AL-C and LS but felt that they did nothing and possibly sped my progression up. The Deanna Protocol is too complex and expensive for me. There are stem cell 'clinics' that would love to empty your bank account, and I saw one PALS crank up a GoFundMe site to pay for his.
If there was (or rather, when there is) a cure, you can bet the farm that this forum will spread the word.
Never stop searching for something that works for you, but don't become a potential posthumous Dr. Phil guest "how I sent my family to the poorhouse chasing an ALS cure".