New to group-tysabri happy stories please!

I was diagnosed with MS 2 months ago after third relapse (in an year) and 2 new lesions in my brain. Before that i only had one lesion on my spine (found after my legs went numb in feb) and positive oligoclonal bands in CS fluid. First symptoms started in June 2022 when i sodden lay developed major leg weakness and extreme fatigue but I was told for months it was long covid. Have 2 further areas on concern in brain but not yet fully fledged lesions .due to highly active nature of my disease I was approved/recommended for tysabri straight off as works the fastest. My mobility has been my biggest issue as since last June (2022) I have been really struggling to walk much/far/for long and I also have weakness in my arms, especially my left. Prior to this I was totally fit and well. Fatigue is also a huge issue for me now since the 3rd relapse in may i just can’t really shake it off and my eyes feel like they are having to work really hard all the time (been checked and cleared by ophthalmology). Just wondering if anyone has been in a similar position and can tel me any positive tales of how tysabri improved their symptoms?? I am especially keen to be able to walk properly again (I use a crutch and can only manage short flat distances). I am an A&e matron but have been unable to work most of this year due to being so unsteady on my feet/fatigued. Any positive stories welcomed!!