I've done the hyperbaric chamber, did it 5 days a week for a month, can't say I noticed any difference tbh although others there swore by it.
For me any benefits were nullified by the effort of getting there I think.

They have me on Tecfidera. How long did it take to feel anything from the LDN? I heard you can have trouble sleeping when you're on it. Any problems with that or anything else?

Forgot to add LDN. Cannot take LDN with interferons and copaxone has none.

I started LDN about a year ago. Felt no difference immediately but OMG after a while I found it to be amazing. Brain fog much better and energy level much higher. Would not ever consider stopping it.
I don't know what DMT you're on but I'm in luck because copaxons is the only MS drug you can take with acthar gel.